Dyfyniad APA
Gopalan, R., Venkappyya, D., & Nagarajan , S. (2005). Text book of Engineering chemistry (2nd ed.). Vikas Publishing House.
Dyfyniad Arddull Chicago
Gopalan, R., D. Venkappyya, and Sulochana Nagarajan. Text Book of Engineering Chemistry. 2nd ed. New Delhi: Vikas Publishing House, 2005.
Dyfyniad MLA
Gopalan, R., et al. Text Book of Engineering Chemistry. 2nd ed. Vikas Publishing House, 2005.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.