Cita APA (7th ed.)
ebrary, Inc, & Lockeretz, W. (2007). Organic farming: An international history. CABI.
Cita Chicago (17th ed.)
ebrary, Inc, i William Lockeretz. Organic Farming: An International History. Cambridge, MA: CABI, 2007.
Cita MLA (9th ed.)
ebrary, Inc, i William Lockeretz. Organic Farming: An International History. CABI, 2007.
Atenció: Aquestes cites poden no estar 100% correctes.