APA (7th ed.) Zitazioa

DeGregori, T. R. (2004). Origins of the organic agriculture debate. Blackwell.

Chicago Style (17th ed.) Zitazioa

DeGregori, Thomas R. Origins of the Organic Agriculture Debate. Iowa City: Blackwell, 2004.

MLA (9th ed.) Zitazioa

DeGregori, Thomas R. Origins of the Organic Agriculture Debate. Blackwell, 2004.