APA (7th ed.) Citation

Cecil, C. B., & Tewalt, S. J. (2002). Coal extraction, environmental prediction. U.S. Dept. of the Interior, U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Cecil, C. B., and Susan J. Tewalt. Coal Extraction, Environmental Prediction. [Reston, Va.]: U.S. Dept. of the Interior, U.S. Geological Survey, 2002.

MLA (9th ed.) Citation

Cecil, C. B., and Susan J. Tewalt. Coal Extraction, Environmental Prediction. U.S. Dept. of the Interior, U.S. Geological Survey, 2002.