Jumaat H. Adam, Mohd Afiq Aizat-Juhari, Nik Nadira-Farhana Nik Ariff, Shamsul Khamis, Mohd Hizamri Mohd Yasin, Kiew-Lian Wan.  (2022).  Rafflesia tunku-azizahiae (Rafflesiaceae), a new species from Pahang, Malaysia.  - Sains Malaysiana.  3843-3855. 

Anisa S. Al-Hakimi, Sarah Abdul Razak, N. Omar, Abdulwahab A. Saeed, Shamsul Khamis, A. Latiff.  (2022).  Stem and Leaf Anatomical Studies of Selected Species of Barlerieae and Ruellieae (Acanthaceae) from Yemen.  - Sains Malaysiana.  1609-1624. 

Syarifah Haniera Sheikh Kamal, Mohd Nazip Suratman, Shamsul Khamis, Ahmad Najmi Nik Hassan, Mohd Syaiful Mohammad.  (2022).  Growth Rate, Mortality Rate and Life Cycle of Rafflesia azlanii and R. cantleyi in Belum-Temenggor Forest Complex, Perak, Malaysia.  - Sains Malaysiana.  943-957. 

M.A.M. Azhar, W.M.N.H.W. Salleh, S. Khamis, N.A. Ghani.  (2022).  Variation in essential oil composition of three Litsea species from Malaysia.  - Rivista Italiana Delle Sostanze Grasse.  57-61. 

W.M.N.H.W. Salleh, N.M. Shakri, M.A. Nafiah, S. Khamis.  (2022).  Chemical constituents and acetylcholinesterase activity from Polyalthia Sumatrana (MIQ.) Kurz.  - Latin American Applied Research.  73-76. 

Wan Mohd Nuzul Hakimi Wan Salleh, Shamsul Khamis, Muhammad Nurakmal Abdul Rahman, Mohd Azlan Nafiah.  (2021).  Chemical composition and acetylcholinesterase activity of the essential oil of anisophyllea disticha.  - Chemistry of Natural Compounds.  371-373. 

A.K.N. Hayati, K. Shamsul, W.A.W. Juliana, F.S. Mohd. Taib, M.N. Shukor, M.H. Shahril, E.A. Filza.  (2021).  Habitat and edaphic preference of Rafflesia R. Br. plant communities in Royal Belum State Park, Perak, Peninsular Malaysia.  - Journal of Environmental Biology.  865-871. 

Wan Mohd Nuzul Hakimi Wan Salleh, Shamsul Khamis.  (2021).  Composition of essential oil from actinodaphne sesquipedalis and its lipoxygenase activity.  - Chemistry of Natural Compounds.  553-555. 

Muhammad Ammar Mohd Azhar, Wan Mohd Nuzul Hakimi Wan Salleh, Shamsul Khamis.  (2021).  Essential oil composition of Beilschmiedia insignis from Malaysia.  - Chemistry of Natural Compounds.  374-375. 

Wan Mohd Nuzul Hakimi Wan Salleh, Shamsul Khamis.  (2021).  Chemical composition of the essential oil of diospyros argentea.  - Chemistry of Natural Compounds.  556-557. 

Wan Mohd Nuzul Hakimi Wan Salleh, Shamsul Khamis, Salam Ahmed Abed.  (2021).  Characterization of volatile components of Chassalia chartacea and its Acetylcholinesterase inhibitory activity.  - Chemistry of Natural Compounds.  376-377. 

Wan Mohd Nuzul Hakimi Wan Salleh, Shamsul Khamis.  (2021).  Composition of volatile oil from Anaxagorea javanica.  - Chemistry of Natural Compounds.  558-559. 

Natasa Mohd Shakri, Wan Mohd Nuzul Hakimi Wan Salleh, Shamsul Khamis, Nor Azah Mohamad Ali.  (2020).  Chemical characterization of Goniothalamus macrophyllus and Goniothalamus malayanus leaves essential oils.  - Zeitschrift fur Naturforschung C A Journal of Biosciences.  485-488. 

Natasa Mohd Shakri, Wan Mohd Nuzul Hakimi Wan Salleh, Shamsul Khamis, Nor Azah Mohamad Ali, Shazlyn Milleana Shaharudin.  (2020).  Chemical composition of the essential oils of four Polyalthia species from Malaysia.  - Zeitschrift fuer Naturforschung, Section C: A Journal of Biosciences.  473-478. 

Muhammad Ammar Mohd Azhar, Wan Mohd Nuzul Hakimi Wan Salleh, Shamsul Khamis.  (2020).  Essential oil composition of three Cryptocarya species from Malaysia.  - Zeitschrift Fur Naturforschung Section C-A Journal of Biosciences.  297-301. 

Wan Mohd Nuzul Hakimi Wan Salleh, Nur Kamilah Mohammed, Nur Athirah Hashim, Shamsul Khamis, Salam Ahmed Abed, Saidu Jibril.  (2020).  Chemical constituents of beilschmiedia penangiana.  - Chemistry of Natural Compounds.  576-577. 

Wan Mohd Nuzul Hakimi Wan Salleh, Shamsul Khamis.  (2020).  Chemical composition and lipoxygenase activity of the leaves essential oil of Rothmannia macrophylla (Hook.f.) Bremek.  - Journal of Essential Oil Bearing Plants.  331-336. 

Wan Mohd Nuzul Hakimi Wan Salleh, Shamsul Khamis.  (2020).  Chemical composition and anticholinesterase inhibitory activity of Pavetta graciliflora Wall. ex Ridl. essential.  - Zeitschrift fur Naturforschung C A Journal of Biosciences.  467-471. 

Wan Mohd Nuzul Hakimi Wan Salleh, Shamsul Khamis, Muhammad Nurakmal Abdul Rahman, Mohd Azlan Nafiah.  (2020).  Chemical composition and biological activities of Dipterocarpus cornutus Dyer essential oil.  - Journal of Biosciences: Zeitschrift für Naturforschung C.  171-175. 

Natasa Mohd Shakri, Wan Mohd Nuzul Hakimi Wan Salleh, Shamsul Khamis, Nor Azah Mohamad Ali, Muhammad Helmi Nadri.  (2020).  Composition of the essential oils of three Malaysian Xylopia species (Annonaceae).  - Zeitschrift fur Naturforschung C A Journal of Biosciences.  479-484. 

Nur Athirah Hashim, Farediah Ahmad, Wan Mohd Nuzul Hakimi Wan Salleh, Shamsul Khamis.  (2019).  A new amide from piper maingayi Hk.F. (Piperaceae).  - Natural Product Communications.  1-5. 

Wan Mohd Nuzul Hakimi Wan Salleh, Norkamilah Abdullah, Nur Athirah Hashim, Heng Yen Khong, Shamsul Khamis.  (2019).  Aporphine alkaloids from Piper erecticaule and acetylcholinesterase inhibitory activity.  - Boletin Latinoamericano y del Caribe de Plantas Medicinales y Aromaticas.  527-532. 

Nur-Athirah Abdullah, Siti Nur Fatehah Radzi, Lailatul-Nadhirah Asri, Nor Shafikah Idris, Shahril Husin, Azman Sulaiman, Shamsul Khamis, Norela Sulaiman, Izfa Riza Hazmi.  (2019).  Insect community in riparian zones of Sungai Sepetang, Sungai Rembau and Sungai Chukai of Peninsular Malaysia.  - Biodiversity Data Journal.  1-24. 

Wan Mohd Nuzul Hakimi Wan Salleh, Nur Athirah Hashim, Shamsul Khamis.  (2019).  Chemical constituents and lipoxygenase inhibitory activity of piper stylosum miq.  - Bulletin of the Chemical Society of Ethiopia.  587-592.