APA (7th ed.) Citation

Gilbert, C. (1967). Physical geology: Laboratory course (2nd ed.). McGraw-Hill.

Chicago Style (17th ed.) Citation

Gilbert, Charles. Physical Geology: Laboratory Course. 2nd ed. New York: McGraw-Hill, 1967.

MLA (9th ed.) Citation

Gilbert, Charles. Physical Geology: Laboratory Course. 2nd ed. McGraw-Hill, 1967.