Cita APA

Bahn, P. G., & Vertut, J. (1997). Journey through the ice age. University of California Press..

Citación estilo Chicago

Bahn, Paul G., and Jean Vertut. Journey Through the Ice Age. Berkeley, U.s.a.: University of California Press., 1997.

Cita MLA

Bahn, Paul G., and Jean Vertut. Journey Through the Ice Age. Berkeley, U.s.a.: University of California Press., 1997.