Billah, Q. M., Chowdhury, G. S., & Alam, M. (2010). Foundation English for undergraduates. Friend's Book.
Chicago-referens (17:e uppl.)Billah, Quazi Mostain, Golam Sarwar Chowdhury, och Monjurul Alam. Foundation English for Undergraduates. Dhaka: Friend's Book, 2010.
MLA-referens (8:e uppl.)Billah, Quazi Mostain, et al. Foundation English for Undergraduates. Friend's Book, 2010.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.