Dyfyniad APA

Kothari, C. (1990). Research methdology: Methods and techniques/2e (2nd ed.). Wiley Eastern.

Dyfyniad Arddull Chicago

Kothari, C.R. Research Methdology: Methods and Techniques/2e. 2nd ed. New Delhi: Wiley Eastern, 1990.

Dyfyniad MLA

Kothari, C.R. Research Methdology: Methods and Techniques/2e. 2nd ed. Wiley Eastern, 1990.

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