एपीए उद्धरण

Thakur, P. (2007). Environmental studies. ABD publishers.

शिकागो स्टाइल उद्धरण

Thakur, P.C. Environmental Studies. Jaipur: ABD publishers, 2007.

एमएलए उद्धरण

Thakur, P.C. Environmental Studies. ABD publishers, 2007.