Style de citation APA (7e éd.)

(1996). World directory of country environmental studies (3a. ed.). World Resources Institute.

Style de citation Chicago (17e éd.)

World Directory of Country Environmental Studies. 3a. ed. Washington, D.C.: World Resources Institute, 1996.

Style de citation MLA (9e éd.)

World Directory of Country Environmental Studies. 3a. ed. World Resources Institute, 1996.