Singh, J. (2007). Methodology and techniques of social research. Kanishka.
Chicago Style (17th ed.) ZitazioaSingh, Jaspal. Methodology and Techniques of Social Research. New York: Kanishka, 2007.
MLA (9th ed.) ZitazioaSingh, Jaspal. Methodology and Techniques of Social Research. Kanishka, 2007.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.