rory a. dow, chee yen choong & yong foo ng.  (2017).  drepanosticta rahmani sp. nov., from kedah, malaysia (odonata: zygoptera: platystictidae).  - zootaxa.  44-50. 

dow, r.a. & choong, c.y..  (2015).  mortonagrion megabinluyog spec. nov. from brunei (odonata: zygoptera: coenagrionidae).  - zootaxa.  89-93. 

a. sukganah, c. y. choong, j. russell, d. neale, r. wickneswari.  (2013).  nucleotide sequence analysis of two lignin genes in acacia auriculiformis × acacia mangium hybrid for enhancement of wood pulp quality.  - tree genetics and genomes.  9(5):1369-1381. 

han chern loh, pek yee tang, shiau foon tee, tze jen chow, chee yen choong, shen yang lim and hoi sen yong.  (2013).  neuregulin-1 (nrg-1) and its susceptibility to schizophrenia: a case-control study and meta-analysis.  - psychiatry research.  208(2):186-188. 

hamidun bunawan, chee yen choong, badrul munir md-zain, syarul nataqain baharum and normah mohd noor.  (2011).  molecular systematics of polygonum minus huds. based on its sequences.  - international journal of molecular sciences.  7626-7634. 

binoy kurian, a.s. hemanthakumar, joemon jacob, wickneswari ratnam, c.y. choong, prabalee sarmah, s. shefeek, vishnu v. nair, s. v. sajithkumar, k.k. sabu.  (2020).  intraspecific genetic variability, differentiation and evolutionary relationships revealed through microsatellite loci in seven economically important calamus species.  - journal of forestry research.  1899-1911. 

rory a. dow, quoc toan phan & chee yen choong.  (2020).  protosticta joepani sp. nov. from borneo with notes on p. kinabaluensis laidlaw, 1915 (odonata: zygoptera: platystictidae).  - zootaxa.  371-387. 

rory a. dow, chee yen choong & yong foo ng.  (2018).  re-description of coeliccia erici laidlaw, and the description of coeliccia sameerae sp. nov. from peninsular malaysia (odonata: zygoptera: platycnemididae).  - zootaxa.  . 

choong, c.y..  (2016).  leptogomphus tioman sp. nov. (odonata: anisoptera: gomphidea) from tioman island, peninsular malaysia.  - zootaxa.  382-388. 

pang, s.l., ong, s.s., lee, h.h., zamri, z., kandasamy, k.i., choong, c.y. and wickneswari, r..  (2014).  isolation and characterization of ccoaomt in the interspecific hybrid of acacia auriculiformis x acacia mangium - a key gene in lignin biosynthesis.  - genetics and molecular research.  7217-7238. 

asif javed muhammad, chee yen choong, melissa wong, mohd zaki abdullah, muhammad norwati, ratnam wickneswari.  (2023).  genetic mapping and qtl analysis of important traits based on single nucleotide polymorphisms in acacia hybrid population.  - acta ecologica sinica.  62-71. 

choong c.y..  (2022).  perkembangan larva tramea transmarina euryale selys, 1878 (larval development of tramea transmarina euryale selys, 1878 (insecta: odonata)).  - serangga.  54-65. 

dow, r.a., choong, c.y., grinang, j., lupiyaningdyah, p..  (2022).  revised checklist of the odonata (dragonflies and damselflies) of borneo.  - malayan nature journal.  217-240. 

choong chee yen, mahadimenakbar mohamed dawood.  (2021).  dragonflies and damselflies (odonata) of kadamaian, kinabalu park, sabah.  - journal of tropical biology and conservation.  71-79. 

binoy kurian, a.s. hemanthakumar, joemon jacob, wickneswari ratnam, c.y. choong, prabalee sarmah, s. shefeek, vishnu v. nair, s. v. sajithkumar, k.k. sabu.  (2020).  intraspecific genetic variability, differentiation and evolutionary relationships revealed through microsatellite loci in seven economically important calamus species.  - journal of forestry research.  1899-1911. 

b. norfazlina1, r. wickneswari and c.y. choong.  (2016).  geographical distribution of musa gracilis holttum in peninsular malaysia.  - the 2016 ukm fst postgraduate colloquium, aip conference proceedings.  1-5. 

abdul munir hj. abdul murad, choong chee yen, eddie shahril ismail, mohamad yusof maskat, mohd salmi md noorani, nazlina ibrahim, nurul huda bt abdul karim, redzuan yahya, rozida mohd khalid, wan r.  (2013).  the 2013 ukm fst postgraduate colloquium.  - proceedings of the universiti kebangsaan malaysia, faculty of science and technology 2013 postgraduate colloquium/aip publishing.  . 

choong chee yen, hanisah ali, ng yong foo.  (2018).  a natural heritage the flora and fauna of universiti kebangsaan malaysia.  - .  4. 

wickneswari ratnam, chee yen choong & muhammad asif javed.  (2017).  crop improvement sustainability through leading-edge technology.  - .  18. 

wickneswari ratnam, kalaivani nadarajah & choong chee yen.  (2017).  applications of high technology for varietal improvement of rice.  - .  140. 

kalaivani nadarajah, ratnam wickneswari & choong chee yen.  (2017).  applications of high technology for varietal improvement of rice.  - .  5. 

salmah yaakop, choong chee yen, izfa riza hazmi, wan juliana wan ahmad, mohamad ruzi abdul rahman & mohd arrabe` ahmad baei.  (2015).  see nature : serangga.  - .  43. 

choong c.y..  (2020).  hutan ulu sat: nadi pemeliharaan alam semulajadi kelantan.  - .  8. 

choong c.y..  (2020).  bukit fraser - kepelbagaian biologi dan persekitaran fizikal.  - .  7. 

choong chee yen, ng yong foo, wee suk ling, izfa riza hazmi, nurul wahida othman, salmah yaakop, norela sulaiman, maimon abdullah.  (2019).  biodiversity in oil palm plantation malaysia.  - .  37. 

choong chee yen, hanisah ali, ng yong foo.  (2018).  a natural heritage the flora and fauna of universiti kebangsaan malaysia.  - .  4. 

aqilah sakinah badrulisham, chee yen choong.  (2018).  siri penyelidikan sains sekitaran dan sumber alam 2018.  - .  4. 

chee yen choong, yasser mohamed arifin & nurfarhana hijan hijas.  (2017).  ancient creatures: dragonflies and damselflies of malaysia.  - .  115. 

wickneswari ratnam, kalaivani nadarajah & choong chee yen.  (2017).  applications of high technology for varietal improvement of rice.  - .  140. 

salmah yaakop, choong chee yen, izfa riza hazmi, wan juliana wan ahmad, mohamad ruzi abdul rahman & mohd arrabe` ahmad baei.  (2015).  see nature : serangga.  - .  43. 

wan juliana wa., choong cy., norela s., salmah y., mohd taib fs., izfa riza h., zulkifli na., mansor ms., rahim f., hardy aac., ruzi mar., zabidi, my., faizi, z., kadri, s. & lilia halim.  (2020).  see nature® stem mentoring an experiential learning on environmental conservation through bio-inspired innovation activities.  - the teaching & learning congress & innovation competition (knovasi 2020).  1-3. 

nurfarhana hizan hijas, tan kok kiat, ajla rafidah baharom & choong chee yen.  (2018).  pepatung dan pepatung jarum petunjuk pencemaran.  - dewan kosmik.  42-46. 

wan juliana wan ahmad, norela sulaiman, choong chee yen, salmah yaakop, saiful mansor, izfa riza hazmi, nadiatur akmal zulkifli, farah shafawati mohd taib, faszly rahim, hardy a. a & chin et al..  (2018).  see nature® pembelajaran kepelbagaian biologi berasaskan pengalaman dan pemuliharaan melalui penglibatan masyarakat.  - rampai penyelidik siri 6: stem untuk komuniti.  . 

khairul maisarah kahar, wan juliana wan ahmad, choong chee yen, norela sulaiman, salmah yaakop, farah shafawati mohd taib, izfa riza hazmi, nadiatur akmar zulkifli, mohammad saiful mansor, faszly rahim, hardy a.a. chin, mohamad ruzi abdul rahman et al..  (2018).  see nature® an experiential learning on biodiversity and conservation through community engagement.  - the 4th joint international seminar of universiti kebangsaan malaysia and gifu university 2018.  . 

choong chee yen .  (2016).  kepelbagaian odonata di tasik chini.  - impak: tasik chini@ukm.  12-13.