APA (7th ed.) Citation

Williams, P. J., & Smith, M. W. (1991). The frozen earth: Fundamentals of geocryology (1. paperback ed.). Cambridge Univ. Press.

Chicago Style (17th ed.) Citation

Williams, Peter J., and Michael W. Smith. The Frozen Earth: Fundamentals of Geocryology. 1. paperback ed. Cambridge [u.a.]: Cambridge Univ. Press, 1991.

MLA (9th ed.) Citation

Williams, Peter J., and Michael W. Smith. The Frozen Earth: Fundamentals of Geocryology. 1. paperback ed. Cambridge Univ. Press, 1991.