United States. Bureau of Mines. (1995). Updated Analysis of Longwall Pillar Stability (ALPS) computer program incorporates new Coal Mine Roof Rating (CMRR). Bureau of Mines, U.S. Dept. of the Interior.
Chicago Style (17th ed.) CitationUnited States. Bureau of Mines. Updated Analysis of Longwall Pillar Stability (ALPS) Computer Program Incorporates New Coal Mine Roof Rating (CMRR). Washington, DC: Bureau of Mines, U.S. Dept. of the Interior, 1995.
MLA (9th ed.) CitationUnited States. Bureau of Mines. Updated Analysis of Longwall Pillar Stability (ALPS) Computer Program Incorporates New Coal Mine Roof Rating (CMRR). Bureau of Mines, U.S. Dept. of the Interior, 1995.
Warning: These citations may not always be 100% accurate.