एपीए उद्धरण

Vasudevan, N. (2006). Essentials of environmental science. Oxford: Alpha Science International.

शिकागो स्टाइल उद्धरण

Vasudevan, N. Essentials of Environmental Science. Oxford: Alpha Science International, 2006.

एमएलए उद्धरण

Vasudevan, N. Essentials of Environmental Science. Oxford: Alpha Science International, 2006.