Ilsley, L. C. (1941). Detailed study of 60-day nonfatal underground accidents in Pennsylvania bituminous coal mines during 1939. U.S. Dept of the Interior, Bureau of Mines.
Chicago Style (17th ed.) CitationIlsley, L. C. Detailed Study of 60-day Nonfatal Underground Accidents in Pennsylvania Bituminous Coal Mines During 1939. Washington, D. C.: U.S. Dept of the Interior, Bureau of Mines, 1941.
MLA (9th ed.) CitationIlsley, L. C. Detailed Study of 60-day Nonfatal Underground Accidents in Pennsylvania Bituminous Coal Mines During 1939. U.S. Dept of the Interior, Bureau of Mines, 1941.
Warning: These citations may not always be 100% accurate.