APA (7th ed.) Citation

Foster, R. J. (1983). Physical geology (4th ed.). C.E. Merrill.

Chicago Style (17th ed.) Citation

Foster, Robert J. Physical Geology. 4th ed. Columbus, Ohio: C.E. Merrill, 1983.

MLA (9th ed.) Citation

Foster, Robert J. Physical Geology. 4th ed. C.E. Merrill, 1983.