APA (7th ed.) Citation

Johnson, S. Y. (1997). Petroleum geology of the state of Washington. U.S. G.P.O. For sale by U.S. Geological Survey, Information Services.

Chicago Style (17th ed.) Citation

Johnson, Samuel Y. Petroleum Geology of the State of Washington. Washington, Denver, CO: U.S. G.P.O. For sale by U.S. Geological Survey, Information Services, 1997.

MLA (9th ed.) Citation

Johnson, Samuel Y. Petroleum Geology of the State of Washington. U.S. G.P.O. For sale by U.S. Geological Survey, Information Services, 1997.