Cita APA

Hudson, N. (1981). Soil conservation. New York: Cornell Univ. Press.

Chicago Style Citation

Hudson, Norman. Soil Conservation. New York: Cornell Univ. Press, 1981.

Cita MLA

Hudson, Norman. Soil Conservation. New York: Cornell Univ. Press, 1981.

Atenció: Aquestes cites poden no estar 100% correctes.