Perry, J. H., Aul, G. N., & Cervik, J. (1978). Methane drainage study in the Sunnyside coalbed, Utah. Dept. of the Interior, Bureau of Mines.
Chicago Style (17th ed.) CitationPerry, J. H., George N. Aul, and Joseph Cervik. Methane Drainage Study in the Sunnyside Coalbed, Utah. [Washington]: Dept. of the Interior, Bureau of Mines, 1978.
MLA (9th ed.) CitationPerry, J. H., et al. Methane Drainage Study in the Sunnyside Coalbed, Utah. Dept. of the Interior, Bureau of Mines, 1978.
Warning: These citations may not always be 100% accurate.