APA (7th ed.) Citation

Emmons, W. H., & Allison, I. S. (1974). Geology: The science of a changing earth (6th ed.). McGraw-Hill.

Chicago Style (17th ed.) Citation

Emmons, William H., and Ira Shimmin Allison. Geology: The Science of a Changing Earth. 6th ed. New York: McGraw-Hill, 1974.

MLA (9th ed.) Citation

Emmons, William H., and Ira Shimmin Allison. Geology: The Science of a Changing Earth. 6th ed. McGraw-Hill, 1974.