एपीए उद्धरण

Joseph, B. (2004). Environmental studies. Tata McGraw-Hill.

शिकागो स्टाइल उद्धरण

Joseph, Benny. Environmental Studies. New Delhi: Tata McGraw-Hill, 2004.

एमएलए उद्धरण

Joseph, Benny. Environmental Studies. Tata McGraw-Hill, 2004.