APA (7th ed.) Citation

Spencer, E. W. (1983). Physical geology. Addison-Wesley Pub. Co.

Chicago Style (17th ed.) Citation

Spencer, Edgar Winston. Physical Geology. Reading, Mass: Addison-Wesley Pub. Co, 1983.

MLA (9th ed.) Citation

Spencer, Edgar Winston. Physical Geology. Addison-Wesley Pub. Co, 1983.