APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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