hua-nong ting, alireza zourmand, see-yan chia, boon- fei yong and badrulzaman abdul hamid..  (2012).  formant frequencies of malay vowels produced by malay children aged between 7 and 12 years.  - journal of voice.  26(5).664 e1-6. 

hua-nong ting, see-yan chia, hany hazfiza manap, ai-hui ho, kian-yean tiu, badrulzaman abdul hamid.  (2012).  fundamental frequency and perturbation measures of sustained vowels in malaysian malay children between 7 and 12 years old.  - journal of voice.  425-430. 

hua nong ting, see yan chia, kang soo kim, siew ling sim, and badrulzaman abdul hamid..  (2011).  vocal fundamental frequency and perturbation measurements of vowels by normal malaysian chinese adults.  - journal of voice.  25(6):311-317. 

hua nong ting, see yan chia, badrulzaman abdul hamid, siti zamratol-mai sarah mukari.  (2011).  acoustic characteristics of vowels by normal malaysian malay young adults.  - journal of voice.  25(6):e305-e309. 

amy kia cheen liew, dalia abdullah, karyn zuhuan ter, shirley puah, hui yee chan, eason soo, badrulzaman abdul hamid.  (2020).  articulatory distortions when using different types of mouthguard.  - sains malaysiana.  1651-1656. 

fadhilah rosdi,mumtaz begum mustafa,siti salwah salim, badrulzaman abdul hamid.  (2017).  the effect of changes in speech features on the recognition accuracy of asr system: a study on the malay speech impaired children.  - malaysian journal of computer science.  48-62. 

badrulzaman abdul hamid, chong jin yee and hasherah mohd ibrahim.  (2022).  acoustic analysis of voicing contrast in malay word-initial plosives produced by mandarin-speaking children.  - pertanika journal of social sciences and humanities.  1673-1689. 

farheen naz anis, cila umat, kartini ahmad, badrulzaman abdul hamid.  (2022).  arabic phoneme-grapheme correspondence by non-native, deaf children with cochlear implants and normal hearing children.  - cochlear implants international.  347-357. 

badrulzaman abdul hamid, chong jin yee and hasherah mohd ibrahim.  (2022).  acoustic analysis of voicing contrast in malay word-initial plosives produced by mandarin-speaking children.  - pertanika.  1673-1689. 

chong foong yen; cila umat; mak kah kei; goh yan jin goh; badrulzaman abdul hamid; and goh bee see.  (2022).  semi-automating a mandarin pediatric speech perception test for use by non-mandarin speaking audiologists: a preliminary study.  - malaysian journal of public health medicine.  25. 

khan kam, law, badrulzaman.  (2021).  speech effect of fixed labial orthodontic appliance in patient with class iii incisor relationship.  - international journal of dentistry and oral science (ijdos).  2277-2282. 

yap joo siew, wong yee yan, sara keong yee hui, taufiq roslan, dr. chu shin ying, dr. ng lay shi, dr. badrulzaman abdul hamid, dr. yazmin binti ahmad rusli.  (2023).  kuasa bermain: buku panduan perkembangan bahasa dan pertuturan kanak-kanak.  - .  87. 

siti zamratol-mai sarah mukari, badrulzaman abdul hamid.  (2008).  penilaian respons auditori kepada pertuturan.  - .  112. 

yap joo siew, wong yee yan, sara keong yee hui, taufiq roslan, dr. chu shin ying, dr. ng lay shi, dr. badrulzaman abdul hamid, dr. yazmin binti ahmad rusli.  (2023).  kuasa bermain: buku panduan perkembangan bahasa dan pertuturan kanak-kanak.  - .  87. 

badrulzaman abdul hamid, shahidi a hamid, shaharina mokhtar.  (2022).  pemerolehan bunyi plosif kanak-kanak melayu.  - .  156. 

lokman saim, siti zamratol-mai sarah mukari, asma abdullah, goh bee see, kartini ahmad, cila umat, raja juanita raja lope and 17 others.  (2015).  protocol for ukm cochlear implant program: guidelines for professionals 2015.  - .  43. 

siti zamratol-mai sarah mukari, badrulzaman abdul hamid.  (2008).  penilaian respons auditori kepada pertuturan.  - .  112. 

badrulzaman abdul hamid.  (2023).  the social and communicative bases of early language and speech.  - .  1-42. 

badrulzaman abdul hamid.  (2023).  stages of language development.  - .  1-39. 

badrulzaman abdul hamid.  (2023).  neurological bases of speech and language.  - .  1-19. 

dr.badrulzaman abdul hamid,nurul izzah binti mohd nazman, nurfadhilah binti shaharudin,chin xue yi,siow jia yao,fang ying ing.  (2023).  si gajah dan semut.  - .  1-12. 

badrulzaman abdul hamid, nurul izzah binti mohd nazman, nurfadhilah binti shaharudin, chin xue yi , siow jia yao,fang yin ing.  (2023).  gigi gary.  - .  1-19.