Elder, C. H., & Irani, M. C. (1977). Geology and gas content of coalbeds in vicinity of Bureau of Mines, Bruceton, Pa. Dept. of the Interior, Bureau of Mines.
Chicago Style (17th ed.) CitationElder, C. H., and M. C. Irani. Geology and Gas Content of Coalbeds in Vicinity of Bureau of Mines, Bruceton, Pa. [Washington]: Dept. of the Interior, Bureau of Mines, 1977.
MLA (9th ed.) CitationElder, C. H., and M. C. Irani. Geology and Gas Content of Coalbeds in Vicinity of Bureau of Mines, Bruceton, Pa. Dept. of the Interior, Bureau of Mines, 1977.
Warning: These citations may not always be 100% accurate.