Birdwell, J. E. (2012). Review of rare earth element concentrations in oil shales of the Eocene Green River Formation. U.S. Department of the Interior, U.S. Geological Survey.
Chicago Style (17th ed.) CitationBirdwell, Justin E. Review of Rare Earth Element Concentrations in Oil Shales of the Eocene Green River Formation. Reston, Virginia: U.S. Department of the Interior, U.S. Geological Survey, 2012.
MLA (9th ed.) CitationBirdwell, Justin E. Review of Rare Earth Element Concentrations in Oil Shales of the Eocene Green River Formation. U.S. Department of the Interior, U.S. Geological Survey, 2012.
Warning: These citations may not always be 100% accurate.