APA-referens

Rao, P. V. (2006). Principles of environmental science and engineering. Prentice-Hall of India.

Chicago-stil citat

Rao, P. Venugopala. Principles of Environmental Science and Engineering. New Delhi: Prentice-Hall of India, 2006.

MLA-referens

Rao, P. Venugopala. Principles of Environmental Science and Engineering. Prentice-Hall of India, 2006.

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