APA-referens (7:e uppl.)

Kula, E. (1998). History of environmental economic thought. Routledge.

Chicago-referens (17:e uppl.)

Kula, Erhun. History of Environmental Economic Thought. London ; New York: Routledge, 1998.

MLA-referens (9:e uppl.)

Kula, Erhun. History of Environmental Economic Thought. Routledge, 1998.