APA Edition Citation

Keen . M .J. (1970). An Intruction to Marine Geology. Pergamon.

Chicago Edition Citation

Keen . M .J. An Intruction to Marine Geology. New York: Pergamon, 1970.

MLA Edition Citation

Keen . M .J. An Intruction to Marine Geology. Pergamon, 1970.

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