FAO. (1989). FAO agriculture series; N22: The state of food and agriculture. Rome: FAO.
Chicago Style aipamenaFAO. FAO Agriculture Series; N22: The State of Food and Agriculture. Rome: FAO, 1989.
MLA aipamenaFAO. FAO Agriculture Series; N22: The State of Food and Agriculture. Rome: FAO, 1989.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.