APA (7th ed.) Citation

Thornton, M. K. (1951). Soils and how to improve them. Agricultural Extension Service, Texas A. & M. College System.

Chicago Style (17th ed.) Citation

Thornton, M. K. Soils and How to Improve Them. College Station, Texas: Agricultural Extension Service, Texas A. & M. College System, 1951.

MLA (9th ed.) Citation

Thornton, M. K. Soils and How to Improve Them. Agricultural Extension Service, Texas A. & M. College System, 1951.