American Geophysical Union & International Geological Congress. (1989). Characteristics of the mid-carboniferous boundary and associated coal-bearing rocks in the Appalachian Basin: Morgantown, West Virginia to Chattanooga, Tennessee, July 10-27, 1989. American Geophysical Union.
Chicago Style (17th ed.) CitationAmerican Geophysical Union and International Geological Congress. Characteristics of the Mid-carboniferous Boundary and Associated Coal-bearing Rocks in the Appalachian Basin: Morgantown, West Virginia to Chattanooga, Tennessee, July 10-27, 1989. Washington, D.C.: American Geophysical Union, 1989.
MLA (9th ed.) CitationAmerican Geophysical Union and International Geological Congress. Characteristics of the Mid-carboniferous Boundary and Associated Coal-bearing Rocks in the Appalachian Basin: Morgantown, West Virginia to Chattanooga, Tennessee, July 10-27, 1989. American Geophysical Union, 1989.