APA استشهاد

Khanna, O. P. (1987). Industrial engineering and management (9th ed.). Dhanpat Rai &Sons.

استشهاد بنمط شيكاغو

Khanna, O P. Industrial Engineering and Management. 9th ed. Delhi: Dhanpat Rai &Sons, 1987.

MLA استشهاد

Khanna, O P. Industrial Engineering and Management. 9th ed. Dhanpat Rai &Sons, 1987.