APA (7th ed.) Citation

Ruhle, J. L. (2000). Geology: Laboratory manual for distance learning. Hubbard Press.

Chicago Style (17th ed.) Citation

Ruhle, James L. Geology: Laboratory Manual for Distance Learning. Northbrook, Ill: Hubbard Press, 2000.

MLA (9th ed.) Citation

Ruhle, James L. Geology: Laboratory Manual for Distance Learning. Hubbard Press, 2000.