Cita APA

Tennessee Valley Authority, National Fertilizer Development Center (U.S.), American Society of Agronomy, Kilmer, V. J., Younts, S. E., & Brady, N. C. (1968). The role of potassium in agriculture. American Society of Agronomy.

Citación estilo Chicago

Tennessee Valley Authority, National Fertilizer Development Center (U.S.), American Society of Agronomy, Victor James Kilmer, S. E. Younts, and Nyle C. Brady. The Role of Potassium in Agriculture. Madison, Wis.: American Society of Agronomy, 1968.

Cita MLA

Tennessee Valley Authority, et al. The Role of Potassium in Agriculture. Madison, Wis.: American Society of Agronomy, 1968.