APA (7th ed.) Citation

Roundy, P. V., Girty, G. H., & Goldman, M. I. (1926). Mississippian formations of San Saba County, Texas. Department of the Interior, U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Roundy, P. V., George Herbert Girty, and Marcus I. Goldman. Mississippian Formations of San Saba County, Texas. Washington: Department of the Interior, U.S. Geological Survey, 1926.

MLA (9th ed.) Citation

Roundy, P. V., et al. Mississippian Formations of San Saba County, Texas. Department of the Interior, U.S. Geological Survey, 1926.