1. Zulkifli SN, Low WY. Sexual practices in Malaysia: determinants of sexual intercourse among unmarried youths. J Adolesc Health. 2000;27(4):276-280. https://doi.org/10.1016/s1054-139x(00)00099-9
2. Siti-Haidah MI, Susan MK, Bujang MA, Voon YL, Chan LF, Abdul-Wahab N, Kalil EZ, Mohd-Ishak N, Kamal NN. The Relationship between Exposure to Sexually Explicit Material and Teenage Pre-marital Pregnancy. Pertanika J. Soc. Sci. Hum. 2017;25(3). http://www.pertanika.upm.edu.my/pjssh/browse/regular-issue?article=JSSH-1466-2015
3. Brown AD, Jejeebhoy S, Shah IH, Yount KM. Sexual relations among young people in developing countries: evidence from WHO case studies. World Health Organization. 2001. http://www.who.int/iris/handle/10665/66836
4. Muhammad NA, Shamsuddin K, Mohd Amin R, Omar K, Thurasamy R. Questionnaire development and validity to measure sexual intention among youth in Malaysia. BMC Public Health. 2017;17(1):157. https://doi.org/10.1186/s12889-016-3949-1
5. Smith G, Kippax S, Aggleton P. HIV and sexual health education in primary and secondary schools: Findings from selected Asia-Pacific countries. National Centre in HIV Social Research, Faculty of Arts and Social Sciences, the University of New South Wales; 2000. https://healtheducationresources.unesco.org/library/documents/hiv-and-sexual-health-education-primary-and-secondary-schools-findings-selected