Hossain, M. R., & Akareem, H. S. (2012). Collection and Retention Management of airtel. BRAC University.
Lua i Stíl Chicago (17ú heag.)Hossain, Mir Rajib, agus Husain Salilul Akareem. Collection and Retention Management of Airtel. BRAC University, 2012.
Lua MLA (8ú heag.)Hossain, Mir Rajib, agus Husain Salilul Akareem. Collection and Retention Management of Airtel. BRAC University, 2012.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.