APA (7th ed.) Citation

Beck, M. W., Hawker, H. W., & Ragsdale, L. G. (1934). Soil survey of Frio County, Texas. [U.S. Govt. Print. Off].

Chicago Style (17th ed.) Citation

Beck, M. W., H. W. Hawker, and L. G. Ragsdale. Soil Survey of Frio County, Texas. Washington: [U.S. Govt. Print. Off], 1934.

MLA (9th ed.) Citation

Beck, M. W., et al. Soil Survey of Frio County, Texas. [U.S. Govt. Print. Off], 1934.