Tek, Ong Eng. “HIV/AIDS/Preventive/Education/Amongst/Biology/Teachers:/Assessing/Knowledge/and/Attitudinal/Change”.
Asian Journal of Assessment in Teaching and Learning, vol. 1, Dec. 2011, pp. 52-64,
https://ejournal.upsi.edu.my/index.php/AJATeL/article/view/1902.