Backer, R. R., Busch, R. A., & Atkins, L. A. (1977). Physical properties of western coal waste materials. U.S. Dept. of the Interior, Bureau of Mines.
Chicago Style (17th ed.) CitationBacker, R. R., R. A. Busch, and L. A. Atkins. Physical Properties of Western Coal Waste Materials. [Washington]: U.S. Dept. of the Interior, Bureau of Mines, 1977.
MLA (9th ed.) CitationBacker, R. R., et al. Physical Properties of Western Coal Waste Materials. U.S. Dept. of the Interior, Bureau of Mines, 1977.
Warning: These citations may not always be 100% accurate.