SUFIAN, A. J. M. (1998). METHODS AND TECHNIQUES OF SOCIAL RESEARCH. The University Press Limited.
Chicago-čujuhus (17. p.)SUFIAN, ABU JAFAR MOHAMMAD. METHODS AND TECHNIQUES OF SOCIAL RESEARCH. 114 Motijheel C/A, Dhaka 1000: The University Press Limited, 1998.
MLA-čujuhus (9. p.)SUFIAN, ABU JAFAR MOHAMMAD. METHODS AND TECHNIQUES OF SOCIAL RESEARCH. The University Press Limited, 1998.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.