APA (7th ed.) Citation

De Witt, W., Jr., Southworth, C. S., Gray, K., & Sutter, J. F. (1993). Principal oil and gas plays in the Appalachian Basin (Province 131). U.S. G.P.O..

Chicago Style (17th ed.) Citation

De Witt, Wallace, Jr., C. Scott Southworth, Karen Gray, and John F. Sutter. Principal Oil and Gas Plays in the Appalachian Basin (Province 131). Washington: U.S. G.P.O., 1993.

MLA (9th ed.) Citation

De Witt, Wallace, Jr., et al. Principal Oil and Gas Plays in the Appalachian Basin (Province 131). U.S. G.P.O., 1993.