एपीए उद्धरण

Butz, S. D. (2008). Science of earth systems. Australia: Thomson.

शिकागो स्टाइल उद्धरण

Butz, Stephen D. Science of Earth Systems. Australia: Thomson, 2008.

एमएलए उद्धरण

Butz, Stephen D. Science of Earth Systems. Australia: Thomson, 2008.