एपीए उद्धरण

Erickson, S. L. (1999). Fundamentals of environmental management. John Wiley.

शिकागो स्टाइल उद्धरण

Erickson, Steven L. Fundamentals of Environmental Management. New York: John Wiley, 1999.

एमएलए उद्धरण

Erickson, Steven L. Fundamentals of Environmental Management. John Wiley, 1999.