SUFIAN, A. J. M. (1998). METHODS AND TECHNIQUES OF SOCIAL RESEARCH. The University Press Limited.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSUFIAN, ABU JAFAR MOHAMMAD. METHODS AND TECHNIQUES OF SOCIAL RESEARCH. 114 Motijheel C/A, Dhaka 1000: The University Press Limited, 1998.
एमएलए (9वां संस्करण) प्रशस्ति पत्रSUFIAN, ABU JAFAR MOHAMMAD. METHODS AND TECHNIQUES OF SOCIAL RESEARCH. The University Press Limited, 1998.
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