Barnes, V. E. (1970). Geologic map of the North Grape Creek Quadrangle, Blanco and Gillespie Counties, Texas. Bureau of Economic Geology, University of Texas.
Chicago Style (17th ed.) CitationBarnes, Virgil E. Geologic Map of the North Grape Creek Quadrangle, Blanco and Gillespie Counties, Texas. Austin, Tex.: Bureau of Economic Geology, University of Texas, 1970.
MLA (9th ed.) CitationBarnes, Virgil E. Geologic Map of the North Grape Creek Quadrangle, Blanco and Gillespie Counties, Texas. Bureau of Economic Geology, University of Texas, 1970.
Warning: These citations may not always be 100% accurate.