West Texas Geological Society. (1980). Geology of the Llano region, central Texas: Guidebook to the annual field trip of the West Texas geological society, October 19-21, 1980. [The Society].
Chicago Style (17th ed.) CitationWest Texas Geological Society. Geology of the Llano Region, Central Texas: Guidebook to the Annual Field Trip of the West Texas Geological Society, October 19-21, 1980. [Midland, Tex.?]: [The Society], 1980.
MLA (9th ed.) CitationWest Texas Geological Society. Geology of the Llano Region, Central Texas: Guidebook to the Annual Field Trip of the West Texas Geological Society, October 19-21, 1980. [The Society], 1980.
Warning: These citations may not always be 100% accurate.