APA
Food and Agricultural Organization of The United Nations, . (1980). FAOTrade Yearbook Vol33: -1979. : Food and Agricultural Organization of The United Nations., Rome, Rome.
Chicago
Food and Agricultural Organization of The United Nations, . 1980. FAOTrade Yearbook Vol33: -1979. : Food and Agricultural Organization of The United Nations., Rome, Rome.
Harvard
Food and Agricultural Organization of The United Nations, . (1980). FAOTrade Yearbook Vol33: -1979. : Food and Agricultural Organization of The United Nations., Rome, Rome.
MLA
Food and Agricultural Organization of The United Nations, . FAOTrade Yearbook Vol33: -1979. : Food and Agricultural Organization of The United Nations., Rome, Rome. 1980.