APA (7th ed.) Citation

Longwell, C. R., Flint, R. F., & Sanders, J. E. (1969). Physical geology. Wiley & Sons.

Chicago Style (17th ed.) Citation

Longwell, Chester R., Richard Foster Flint, and John E. Sanders. Physical Geology. New York [etc.]: Wiley & Sons, 1969.

MLA (9th ed.) Citation

Longwell, Chester R., et al. Physical Geology. Wiley & Sons, 1969.