United States. Bureau of Soils, Texas Agricultural Experiment Station, & Hawker, H. W. (1921). Soil survey of Freestone County, Texas. Govt. Print. Off.
Chicago Style (17th ed.) CitationUnited States. Bureau of Soils, Texas Agricultural Experiment Station, and H. W. Hawker. Soil Survey of Freestone County, Texas. Washington: Govt. Print. Off, 1921.
MLA (9th ed.) CitationUnited States. Bureau of Soils, et al. Soil Survey of Freestone County, Texas. Govt. Print. Off, 1921.
Warning: These citations may not always be 100% accurate.