APA (7th ed.) Citation

California Institute of Public Affairs, editor, Trzyna, T. C., & Gotelli, I. (1992). World directory of environmental organizations (4rd ed.). California Institute of Public Affairs.

Chicago Style (17th ed.) Citation

California Institute of Public Affairs, editor, Thaddeus C. Trzyna, and Ilze Gotelli. World Directory of Environmental Organizations. 4rd ed. Sacramento: California Institute of Public Affairs, 1992.

MLA (9th ed.) Citation

California Institute of Public Affairs, editor, et al. World Directory of Environmental Organizations. 4rd ed. California Institute of Public Affairs, 1992.