APA استشهاد

Kothari, C. R. (1997). Research methodology: Methods and techniques (Ed.2.).

استشهاد بنمط شيكاغو

Kothari, C R. Research Methodology: Methods and Techniques. Ed.2. New Delhi, Wiswa Prakashan, 1997.

MLA استشهاد

Kothari, C R. Research Methodology: Methods and Techniques. Ed.2. 1997.