Tullis, E. L. (1952). Beryl resources of the Black Hills of South Dakota. U.S. Department of the Interior, Bureau of Mines.
Chicago Style (17th ed.) CitationTullis, Edward L. Beryl Resources of the Black Hills of South Dakota. [Washington, D.C.]: U.S. Department of the Interior, Bureau of Mines, 1952.
MLA (9th ed.) CitationTullis, Edward L. Beryl Resources of the Black Hills of South Dakota. U.S. Department of the Interior, Bureau of Mines, 1952.
Warning: These citations may not always be 100% accurate.