APA ציטוט

Heady, E. O., & Dillon, J. L. Agricultural production functions (5a ed.).

Chicago Style (17th ed.) Citation

Heady, Earl O., and John L. Dillon. Agricultural Production Functions. 5a ed.

ציטוט MLA

Heady, Earl O., and John L. Dillon. Agricultural Production Functions. 5a ed.