Παραπομπή APA

Ranjit Kumar. (2011). Research methodology (3rd ed.). Sage.

Παραπομπή Chicago Style

Ranjit Kumar. Research Methodology. 3rd ed. New Delhi: Sage, 2011.

Παραπομπή MLA

Ranjit Kumar. Research Methodology. 3rd ed. Sage, 2011.