APA استشهاد

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

استشهاد بنمط شيكاغو

Ranjit Kumar. Research Methodology. 3rd ed. Los Angeles: SAGE, 2011.

MLA استشهاد

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