Style de citation APA (7e éd.)

Johnston, R. J. (1991). Environmental problems: Nature, economy and state. Belhaven Press.

Style de citation Chicago (17e éd.)

Johnston, Ronald John. Environmental Problems: Nature, Economy and State. London ; New York: Belhaven Press, 1991.

Style de citation MLA (9e éd.)

Johnston, Ronald John. Environmental Problems: Nature, Economy and State. Belhaven Press, 1991.