APA (7th ed.) Citation

Bahn, P. G., & Vertut, J. (1997). Journey through the ice age. Weidenfeld and Nicolson.

Chicago Style (17th ed.) Citation

Bahn, Paul G., and Jean Vertut. Journey Through the Ice Age. London: Weidenfeld and Nicolson, 1997.

MLA (9th ed.) Citation

Bahn, Paul G., and Jean Vertut. Journey Through the Ice Age. Weidenfeld and Nicolson, 1997.