Opel, A., Zaman, S. S., Khanom, F., & Aboud, F. E. (2008). Effectiveness of a community-based child stimulation program in rural Bangladesh: ECD Research Report 5. Early Childhood Development Resource Centre, BRAC University.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Opel, Aftab, Syeda Sazia Zaman, Ferdousi Khanom, و Frances E. Aboud. Effectiveness of a Community-based Child Stimulation Program in Rural Bangladesh: ECD Research Report 5. Dhaka: Early Childhood Development Resource Centre, BRAC University, 2008.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Opel, Aftab, et al. Effectiveness of a Community-based Child Stimulation Program in Rural Bangladesh: ECD Research Report 5. Early Childhood Development Resource Centre, BRAC University, 2008.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.