APA (7th ed.) Citation

Welch, C. D., Grey, C., Thomas, G. W., & Anderson, W. A. (1968). Zinc deficiency and fertilization. Texas A&M University, Agricultural Extension Service.

Chicago Style (17th ed.) Citation

Welch, C. D., Carl Grey, Grant W. Thomas, and Warren A. Anderson. Zinc Deficiency and Fertilization. College Station, [Texas]: Texas A&M University, Agricultural Extension Service, 1968.

MLA (8th ed.) Citation

Welch, C. D., et al. Zinc Deficiency and Fertilization. Texas A&M University, Agricultural Extension Service, 1968.