APA استشهاد

Uppal, S. (1976). Electrical power (6th ed.). Khanna Publishers.

استشهاد بنمط شيكاغو

Uppal, S.L. Electrical Power. 6th ed. Delhi: Khanna Publishers, 1976.

MLA استشهاد

Uppal, S.L. Electrical Power. 6th ed. Khanna Publishers, 1976.