Akram, S. M. R., & Ahmed, M. S. S. S. (2015). An overview of VoIP industry with a focus on REVE system. BRAC University.
Lua i Stíl Chicago (17ú heag.)Akram, S. M. Rasel, agus Ms. Syeda Shaherbanu Shahbazi Ahmed. An Overview of VoIP Industry with a Focus on REVE System. BRAC University, 2015.
Lua MLA (8ú heag.)Akram, S. M. Rasel, agus Ms. Syeda Shaherbanu Shahbazi Ahmed. An Overview of VoIP Industry with a Focus on REVE System. BRAC University, 2015.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.