एपीए उद्धरण

Vandana, S. (1997). World directory of environmental organisations. A.P.H. Publishing Corporation.

शिकागो स्टाइल उद्धरण

Vandana, S. World Directory of Environmental Organisations. New Delhi: A.P.H. Publishing Corporation, 1997.

एमएलए उद्धरण

Vandana, S. World Directory of Environmental Organisations. A.P.H. Publishing Corporation, 1997.