APA aipamena

Halcrow,Harold G. (1981). Economics of agriculture. McGraw Hill.

Chicago Style aipamena

Halcrow,Harold G. Economics of Agriculture. London: McGraw Hill, 1981.

MLA aipamena

Halcrow,Harold G. Economics of Agriculture. McGraw Hill, 1981.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.