Dyfyniad APA
Rao, P. V. (2002). Textbook of Environmental Engineering. Prentic Hall.
Dyfyniad Arddull Chicago
Rao, P. Venugopala. Textbook of Environmental Engineering. New Delhi: Prentic Hall, 2002.
Dyfyniad MLA
Rao, P. Venugopala. Textbook of Environmental Engineering. Prentic Hall, 2002.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.