APA (7th ed.) Citation

Gilluly, J., Waters, A. C., & Woodford, A. O. (1968). Principles of geology (3rd edition.). W. H. Freeman & Company.

Chicago Style (17th ed.) Citation

Gilluly, James, Aaron C. Waters, and A. O. Woodford. Principles of Geology. 3rd edition. San Francisco: W. H. Freeman & Company, 1968.

MLA (8th ed.) Citation

Gilluly, James, et al. Principles of Geology. 3rd edition. W. H. Freeman & Company, 1968.