Cita APA

Widdowson, R. W. (1987). Towards holistic agriculture: A scientific approach. New York: Pergamon Press.

Chicago Style Citation

Widdowson, R. W. Towards Holistic Agriculture: A Scientific Approach. New York: Pergamon Press, 1987.

Cita MLA

Widdowson, R. W. Towards Holistic Agriculture: A Scientific Approach. New York: Pergamon Press, 1987.

Atenció: Aquestes cites poden no estar 100% correctes.