APA (7th ed.) Citation

Heady, E. O., & Dillon, J. L. (1961). Agricultural production functions. Iowa State University Press.

Chicago Style (17th ed.) Citation

Heady, Earl O., and John L. Dillon. Agricultural Production Functions. Ames: Iowa State University Press, 1961.

MLA (9th ed.) Citation

Heady, Earl O., and John L. Dillon. Agricultural Production Functions. Iowa State University Press, 1961.