Jacobson, R. J. (1993). Coal resources of the Dekoven and Davis Members (Carbondale Formation) in Gallatin and Saline Counties, Southeastern, Illinois. [Dept. of Energy and Natural Resources, Illinois State Geological Survey].
Chicago Style (17th ed.) CitationJacobson, R. J. Coal Resources of the Dekoven and Davis Members (Carbondale Formation) in Gallatin and Saline Counties, Southeastern, Illinois. Champaign, Ill.: [Dept. of Energy and Natural Resources, Illinois State Geological Survey], 1993.
MLA (9th ed.) CitationJacobson, R. J. Coal Resources of the Dekoven and Davis Members (Carbondale Formation) in Gallatin and Saline Counties, Southeastern, Illinois. [Dept. of Energy and Natural Resources, Illinois State Geological Survey], 1993.
Warning: These citations may not always be 100% accurate.