APA استشهاد

Gupta, U. S. (1978). Crop physiology. Oxford and IBH publishing.

استشهاد بنمط شيكاغو

Gupta, U S. Crop Physiology. New Delhi: Oxford and IBH publishing, 1978.

MLA استشهاد

Gupta, U S. Crop Physiology. Oxford and IBH publishing, 1978.