APA
Food and Agriculture Organization of the United Nations, . (1968). Ceres. Rome: FAO.
Chicago
Food and Agriculture Organization of the United Nations, . 1968. Ceres. Rome: FAO.
Harvard
Food and Agriculture Organization of the United Nations, . (1968). Ceres. Rome: FAO.
MLA
Food and Agriculture Organization of the United Nations, . Ceres. Rome: FAO. 1968.