Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.