APA (7th ed.) Citation

Welch, C. D., Grey, C., & Anderson, W. A. (1969). Zinc deficiency and fertilization (9-69, Revised.). Texas A&M University, Agricultural Extension Service.

Chicago Style (17th ed.) Citation

Welch, C. D., Carl Grey, and Warren A. Anderson. Zinc Deficiency and Fertilization. 9-69, Revised. College Station, [Texas]: Texas A&M University, Agricultural Extension Service, 1969.

MLA (8th ed.) Citation

Welch, C. D., et al. Zinc Deficiency and Fertilization. 9-69, Revised. Texas A&M University, Agricultural Extension Service, 1969.