Jaspal Sing. (2007). Methodology and techniques of social research. Kanishka Publishers Distributors.
Trích dẫn kiểu ChicagoJaspal Sing. Methodology and Techniques of Social Research. New Delhi: Kanishka Publishers Distributors, 2007.
Trích dẫn MLAJaspal Sing. Methodology and Techniques of Social Research. Kanishka Publishers Distributors, 2007.
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