APA (7th ed.) Citation

Alt, D. D., & Hyndman, D. W. (1990). Roadside geology of Montana (2. print.). Mountain Press.

Chicago Style (17th ed.) Citation

Alt, David D., and Donald W. Hyndman. Roadside Geology of Montana. 2. print. Missoula, Mont: Mountain Press, 1990.

MLA (9th ed.) Citation

Alt, David D., and Donald W. Hyndman. Roadside Geology of Montana. 2. print. Mountain Press, 1990.