APA (7th ed.) Citation

Welch, C. D., Grey, C., Smith, K. L., & Keisling, T. C. (1979). Crop fertilization on East Texas soils (2-79, revision.). Texas Agricultural Extension Service.

Chicago Style (17th ed.) Citation

Welch, C. D., Carl Grey, Kenneth L. Smith, and Terry Clymer Keisling. Crop Fertilization on East Texas Soils. 2-79, revision. College Station, [Texas]: Texas Agricultural Extension Service, 1979.

MLA (9th ed.) Citation

Welch, C. D., et al. Crop Fertilization on East Texas Soils. 2-79, revision. Texas Agricultural Extension Service, 1979.