APA (7th ed.) Citation

Hussen, A. M. (2004). Principles of environmental economics (2. ed.). Routledge.

Chicago Style (17th ed.) Citation

Hussen, Ahmed M. Principles of Environmental Economics. 2. ed. London; New York: Routledge, 2004.

MLA (9th ed.) Citation

Hussen, Ahmed M. Principles of Environmental Economics. 2. ed. Routledge, 2004.