APA Edition Citation

Longwell, C. R., & Flint, R. F. Introduction to physical geology (6th ed.).

Chicago Edition Citation

Longwell, Chester R., and Richard F. Flint. Introduction to Physical Geology. 6th ed.

MLA Edition Citation

Longwell, Chester R., and Richard F. Flint. Introduction to Physical Geology. 6th ed.

Warning: These citations may not always be 100% accurate.