APA (7th ed.) Citation

(1973). World directory of environmental organizations (4th ed.). California Institute of Public Affairs.

Chicago Style (17th ed.) Citation

World Directory of Environmental Organizations. 4th ed. Claremont, Calif: California Institute of Public Affairs, 1973.

MLA (9th ed.) Citation

World Directory of Environmental Organizations. 4th ed. California Institute of Public Affairs, 1973.

Warning: These citations may not always be 100% accurate.