Clopine, W. W. (1991). Lower and middle Pennsylvanian measured sections Type Derryan Region, southern New Mexico and westernmost Texas (Rev.). New Mexico Bureau of Mines & Mineral Resources.
Chicago Style (17th ed.) CitationClopine, William W. Lower and Middle Pennsylvanian Measured Sections Type Derryan Region, Southern New Mexico and Westernmost Texas. Rev. Socorro, N.M.: New Mexico Bureau of Mines & Mineral Resources, 1991.
MLA (9th ed.) CitationClopine, William W. Lower and Middle Pennsylvanian Measured Sections Type Derryan Region, Southern New Mexico and Westernmost Texas. Rev. New Mexico Bureau of Mines & Mineral Resources, 1991.
Warning: These citations may not always be 100% accurate.