APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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

Kontuz: berrikusi erreferentzia hauek erabili aurretik.