APA ציטוט

Rao,Venugopala P. (2012). Textbook of environmental engineering. PHI Learning.

Chicago Edition Citation

Rao,Venugopala P. Textbook of Environmental Engineering. New Delhi: PHI Learning, 2012.

ציטוט MLA

Rao,Venugopala P. Textbook of Environmental Engineering. PHI Learning, 2012.