APA aipamena

Sadhu, A., & Singh, A. (1980). Research methodology in social sciences.

Chicago Style aipamena

Sadhu, A.N, and Amarjit Singh. Research Methodology in Social Sciences. 1980.

MLA aipamena

Sadhu, A.N, and Amarjit Singh. Research Methodology in Social Sciences. 1980.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.