APA (7th ed.) Citation

Blum, E. L. (1977). Soil survey of Sterling County, Texas. The Service.

Chicago Style (17th ed.) Citation

Blum, Ervin L. Soil Survey of Sterling County, Texas. [Washington]: The Service, 1977.

MLA (9th ed.) Citation

Blum, Ervin L. Soil Survey of Sterling County, Texas. The Service, 1977.

Warning: These citations may not always be 100% accurate.