Sufian, A. J. M. (1998). Methods and techniques of social research. University Press.
Chicago Style aipamenaSufian, Abu Jafar Mohammad. Methods and Techniques of Social Research. Dhaka: University Press, 1998.
MLA aipamenaSufian, Abu Jafar Mohammad. Methods and Techniques of Social Research. University Press, 1998.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.