APA (7th ed.) Citation

Shannon, C. W., & Trout, L. E. (1915). Petroleum and natural gas in Oklahoma. [publisher not identified].

Chicago Style (17th ed.) Citation

Shannon, C. W., and Laurence Emory Trout. Petroleum and Natural Gas in Oklahoma. Norman: [publisher not identified], 1915.

MLA (9th ed.) Citation

Shannon, C. W., and Laurence Emory Trout. Petroleum and Natural Gas in Oklahoma. [publisher not identified], 1915.