Snook, J. (2008). Ice age extinction: Cause and human consequences. Algora Pub..
Cita Chicago (17th ed.)Snook, Jim. Ice Age Extinction: Cause and Human Consequences. New York: Algora Pub., 2008.
Cita MLA (9th ed.)Snook, Jim. Ice Age Extinction: Cause and Human Consequences. Algora Pub., 2008.
Atenció: Aquestes cites poden no estar 100% correctes.