Dyfyniad APA

Kothari, C. (1990). Research methodology: Methods and techniques (2nd.). Wiley eastern limited New Age International.

Dyfyniad Arddull Chicago

Kothari, C.R. Research Methodology: Methods and Techniques. 2nd. New Delhi: Wiley eastern limited New Age International, 1990.

Dyfyniad MLA

Kothari, C.R. Research Methodology: Methods and Techniques. 2nd. Wiley eastern limited New Age International, 1990.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.