APA (7th ed.) Citation

Deems, N. J., & Hackley, P. C. (2012). Database of the United States coal pellet collection of the U.S. Geological Survey Organic Petrology Laboratory. U.S. Dept. of the Interior, U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Deems, Nikolaus J., and Paul C. Hackley. Database of the United States Coal Pellet Collection of the U.S. Geological Survey Organic Petrology Laboratory. Reston, Va: U.S. Dept. of the Interior, U.S. Geological Survey, 2012.

MLA (9th ed.) Citation

Deems, Nikolaus J., and Paul C. Hackley. Database of the United States Coal Pellet Collection of the U.S. Geological Survey Organic Petrology Laboratory. U.S. Dept. of the Interior, U.S. Geological Survey, 2012.