Heady, E. O. (1964). economics of agricultural production and resource use. Prentice hall of India pvt. ltd.
Chicago Style aipamenaHeady, Earl O. Economics of Agricultural Production and Resource Use. New Delhi: Prentice hall of India pvt. ltd, 1964.
MLA aipamenaHeady, Earl O. Economics of Agricultural Production and Resource Use. Prentice hall of India pvt. ltd, 1964.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.