Cita APA (7th ed.)

Davidson, J. P., Reed, W. E., & Davis, P. M. (1997). Exploring earth: An introduction to physical geology. Prentice Hall.

Cita Chicago (17th ed.)

Davidson, Jon P., Walter E. Reed, i Paul M. Davis. Exploring Earth: An Introduction to Physical Geology. Upper Saddle River, NJ: Prentice Hall, 1997.

Cita MLA (9th ed.)

Davidson, Jon P., et al. Exploring Earth: An Introduction to Physical Geology. Prentice Hall, 1997.