APA استشهاد

C.R.Kothari. (2004). Research methodology (2nd rev.ed.). New Age International.

استشهاد بنمط شيكاغو

C.R.Kothari. Research Methodology. 2nd rev.ed. New Delhi: New Age International, 2004.

MLA استشهاد

C.R.Kothari. Research Methodology. 2nd rev.ed. New Age International, 2004.