Citazione APA

Dillon, J. L., & Heady, E. O. (1988). Agricultural production functions. Kalyani Publishers.

Stile di citazione Chicago

Dillon, John L., e Earl O. Heady. Agricultural Production Functions. Newdelhi: Kalyani Publishers, 1988.

Citazione MLA

Dillon, John L., e Earl O. Heady. Agricultural Production Functions. Kalyani Publishers, 1988.