APA (7th ed.) Citation

Bahn, P. G., & Vertut, J. (1988). Images of the ice age. Facts on File.

Chicago Style (17th ed.) Citation

Bahn, Paul G., and Jean Vertut. Images of the Ice Age. New York u.a: Facts on File, 1988.

MLA (9th ed.) Citation

Bahn, Paul G., and Jean Vertut. Images of the Ice Age. Facts on File, 1988.