एपीए उद्धरण

Botkin, D. B., & Keller, E. D. (2012). Environmental Science: Earth as a Living Planet, 8th Edition. Wiley.

शिकागो स्टाइल उद्धरण

Botkin, Daniel B., और Edward D. Keller. Environmental Science: Earth As a Living Planet, 8th Edition. Wiley, 2012.

एमएलए उद्धरण

Botkin, Daniel B., और Edward D. Keller. Environmental Science: Earth As a Living Planet, 8th Edition. Wiley, 2012.