APA (7th ed.) Citation

Williams, P. J. (1989). The frozen earth: Fundamentals of geocryology. Cambridge University Press. https://doi.org/10.1017/CBO9780511564437

Chicago Style (17th ed.) Citation

Williams, Peter J. The Frozen Earth: Fundamentals of Geocryology. Cambridge: Cambridge University Press, 1989. https://doi.org/10.1017/CBO9780511564437.

MLA (9th ed.) Citation

Williams, Peter J. The Frozen Earth: Fundamentals of Geocryology. Cambridge University Press, 1989. https://doi.org/10.1017/CBO9780511564437.