APA (7th ed.) Citation

Foster, R. J. (1986). Physical Geology (7th ed.). Charles E. Merrill.

Chicago Style (17th ed.) Citation

Foster, Robert J. Physical Geology. 7th ed. Columbus: Charles E. Merrill, 1986.

MLA (9th ed.) Citation

Foster, Robert J. Physical Geology. 7th ed. Charles E. Merrill, 1986.