APA

Kothari C. R., . (1990). Research methodology: Methods and techniques. : Wishwa Prakashan, New Delhi.

Chicago

Kothari C R, . 1990. Research methodology: Methods and techniques. : Wishwa Prakashan, New Delhi.

Harvard

Kothari C. R., . (1990). Research methodology: Methods and techniques. : Wishwa Prakashan, New Delhi.

MLA

Kothari C R, . Research methodology: Methods and techniques. : Wishwa Prakashan, New Delhi. 1990.