APA ציטוט

Cunningham, W. P. (2006). Principles of enviromental science. New York: Margateth J. Kemp.

Chicago Style Citation

Cunningham, William P. Principles of Enviromental Science. New York: Margateth J. Kemp, 2006.

ציטוט MLA

Cunningham, William P. Principles of Enviromental Science. New York: Margateth J. Kemp, 2006.