Heady, E. O., & Dillon, J. L. Agricultural production functions (5a ed.).
芝加哥风格引文Heady, Earl O., 与 John L. Dillon. Agricultural Production Functions. 5a ed.
MLA引文Heady, Earl O., 与 John L. Dillon. Agricultural Production Functions. 5a ed.
警告：这些引文格式不一定是100％准确.