APA (7th ed.) Citation

Plummer, C. C., Carlson, D. H., & Hammersley, L. Physical geology (Seventeenth edition.).

Chicago Style (17th ed.) Citation

Plummer, Charles C., Diane H. Carlson, and Lisa Hammersley. Physical Geology. Seventeenth edition.

MLA (9th ed.) Citation

Plummer, Charles C., et al. Physical Geology. Seventeenth edition.