APA (7th ed.) Citation

Sanders, J. E., Anderson, A. H., & Carola, R. (1976). Physical geology. Harper's College Press.

Chicago Style (17th ed.) Citation

Sanders, John Essington, Alan H. Anderson, and Robert Carola. Physical Geology. New York: Harper's College Press, 1976.

MLA (9th ed.) Citation

Sanders, John Essington, et al. Physical Geology. Harper's College Press, 1976.