APA استشهاد

Kumar, R. (2014). Research methodology: A step-by-step guide for beginners (2nd ed.). SAGE.

استشهاد بنمط شيكاغو

Kumar, Ranjit. Research Methodology: A Step-by-step Guide for Beginners. 2nd ed. New Delhi; Pearson: SAGE, 2014.

MLA استشهاد

Kumar, Ranjit. Research Methodology: A Step-by-step Guide for Beginners. 2nd ed. SAGE, 2014.