APA استشهاد

Ojha,, . H. (1991). Origin of achievement motivation. Classical Publishing Co..

استشهاد بنمط شيكاغو

Ojha,, Hardeo. Origin of Achievement Motivation. New Delhi: Classical Publishing Co., 1991.

MLA استشهاد

Ojha,, Hardeo. Origin of Achievement Motivation. Classical Publishing Co., 1991.