APA (7th ed.) Citation

Judson, S., Leet, L., & Kauffman, M. E. (1987). Physical geology (7th ed.). Prentice-Hall.

Chicago Style (17th ed.) Citation

Judson, Sheldon, L. Leet, and Marvin Earl Kauffman. Physical Geology. 7th ed. Englewood Cliffs, N.J.: Prentice-Hall, 1987.

MLA (9th ed.) Citation

Judson, Sheldon, et al. Physical Geology. 7th ed. Prentice-Hall, 1987.