Dillon, J. L., & Heady, E. O. (1988). Agricultural production functions. Kalyani Publishers.
Čikaški stil citiranjaDillon, John L., i Earl O. Heady. Agricultural Production Functions. Newdelhi: Kalyani Publishers, 1988.
MLA način citiranjaDillon, John L., i Earl O. Heady. Agricultural Production Functions. Kalyani Publishers, 1988.
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