Dyfyniad APA

Kothary, C. (1990). Research methdology /2e (2nd ed.). WileyEastern.

Dyfyniad Arddull Chicago

Kothary, C.R. Research Methdology /2e. 2nd ed. New Delhi: WileyEastern, 1990.

Dyfyniad MLA

Kothary, C.R. Research Methdology /2e. 2nd ed. WileyEastern, 1990.

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