APA (7th ed.) Citation

Willis, H. (2008). Foundations of natural farming: Understanding core concepts of ecological agriculture. Acres U.S.A..

Chicago Style (17th ed.) Citation

Willis, Harold. Foundations of Natural Farming: Understanding Core Concepts of Ecological Agriculture. Austin, Tex.: Acres U.S.A., 2008.

MLA (9th ed.) Citation

Willis, Harold. Foundations of Natural Farming: Understanding Core Concepts of Ecological Agriculture. Acres U.S.A., 2008.

Warning: These citations may not always be 100% accurate.