APA استشهاد

Gopalan, R., & Venkappayya, D. (2006). Textbook of engineering chemistry (3rd.). Vikas publishing house.

استشهاد بنمط شيكاغو

Gopalan, R., و D. Venkappayya. Textbook of Engineering Chemistry. 3rd. New Delhi: Vikas publishing house, 2006.

MLA استشهاد

Gopalan, R., و D. Venkappayya. Textbook of Engineering Chemistry. 3rd. Vikas publishing house, 2006.