Grannes, S. G., Green, G. R., & Ackerson, M. A. (1990). Preventing automatic fire suppression system failures on underground mining belt conveyors. U.S. Dept. of Interior, Bureau of Mines.
Chicago-referens (17:e uppl.)Grannes, S. G., Garry R. Green, och M. A. Ackerson. Preventing Automatic Fire Suppression System Failures on Underground Mining Belt Conveyors. [Washington, D.C.]: U.S. Dept. of Interior, Bureau of Mines, 1990.
MLA-referens (9:e uppl.)Grannes, S. G., et al. Preventing Automatic Fire Suppression System Failures on Underground Mining Belt Conveyors. U.S. Dept. of Interior, Bureau of Mines, 1990.