Heathfield, D. F. (1971). Production functions ([1st pub.].). Macmillan.
Cita Chicago Style (17a ed.)Heathfield, David F. Production Functions. [1st pub.]. London [etc.]: Macmillan, 1971.
Cita MLA (9a ed.)Heathfield, David F. Production Functions. [1st pub.]. Macmillan, 1971.
Precaución: Estas citas no son 100% exactas.