Kula, E. (1998). History of environmental economic thought. Routledge.
Lua i Stíl Chicago (17ú heag.)Kula, Erhun. History of Environmental Economic Thought. London ; New York: Routledge, 1998.
Lua MLA (9ú heag.)Kula, Erhun. History of Environmental Economic Thought. Routledge, 1998.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.