Sultana, S. N., & Akhter, M. (2015). Backwash effect of SSC and HSC Examinations: Focus on listening and speaking skills. BRAC University.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Sultana, Sayeda Niger, و Mahmuda Akhter. Backwash Effect of SSC and HSC Examinations: Focus on Listening and Speaking Skills. BRAC University, 2015.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Sultana, Sayeda Niger, و Mahmuda Akhter. Backwash Effect of SSC and HSC Examinations: Focus on Listening and Speaking Skills. BRAC University, 2015.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.