APA (7th ed.) Citation

Crysdale, B. L., & Schenk, C. J. (1988). Bitumen-bearing deposits of the United States. Department of the Interior, U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Crysdale, Bonnie L., and Christopher J. Schenk. Bitumen-bearing Deposits of the United States. [Reston, Va.]: Department of the Interior, U.S. Geological Survey, 1988.

MLA (9th ed.) Citation

Crysdale, Bonnie L., and Christopher J. Schenk. Bitumen-bearing Deposits of the United States. Department of the Interior, U.S. Geological Survey, 1988.