Sarah Nur Alya Mohd Sofian. (2013). A randomized controlled trial on the effect of HIV preventive education on the level of knowledge, attitude and behaviour among early adolescents. Universiti Kebangsaan Malaysia.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Sarah Nur Alya Mohd Sofian. A Randomized Controlled Trial on the Effect of HIV Preventive Education on the Level of Knowledge, Attitude and Behaviour Among Early Adolescents. Kuala Lumpur: Universiti Kebangsaan Malaysia, 2013.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Sarah Nur Alya Mohd Sofian. A Randomized Controlled Trial on the Effect of HIV Preventive Education on the Level of Knowledge, Attitude and Behaviour Among Early Adolescents. Universiti Kebangsaan Malaysia, 2013.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.