APA (7th ed.) Zitazioa
Federico, G. (2009). Feeding the world: An economic history of agriculture, 1800-2000. Princeton University Press.
Chicago Style (17th ed.) Zitazioa
Federico, Giovanni. Feeding the World: An Economic History of Agriculture, 1800-2000. Princeton, N.J.: Princeton University Press, 2009.
MLA (9th ed.) Zitazioa
Federico, Giovanni. Feeding the World: An Economic History of Agriculture, 1800-2000. Princeton University Press, 2009.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.