APA

Laird R. J., Ruiz B, Rodriguez J. H., Cady F. B. & International Maize and Wheat Improvement Center. (1969). Combining data from fertilizer experiments into a function useful fo r estimating specific fertilizer recommendations. Mexico: International Maize and Wheat Improvement Center.

Chicago

Laird R J, Ruiz B, Rodriguez J Horacio, Cady Foster B and International Maize and Wheat Improvement Center. 1969. Combining data from fertilizer experiments into a function useful fo r estimating specific fertilizer recommendations. Mexico: International Maize and Wheat Improvement Center.

Harvard

Laird R. J., Ruiz B, Rodriguez J. H., Cady F. B. and International Maize and Wheat Improvement Center. (1969). Combining data from fertilizer experiments into a function useful fo r estimating specific fertilizer recommendations. Mexico: International Maize and Wheat Improvement Center.

MLA

Laird R J, Ruiz B, Rodriguez J Horacio, Cady Foster B and International Maize and Wheat Improvement Center. Combining data from fertilizer experiments into a function useful fo r estimating specific fertilizer recommendations. Mexico: International Maize and Wheat Improvement Center. 1969.