APA
Food and Agriculture Organization of the United Nations, . (1989). Horticultural marketing :a resource and training manual for extension officers/ (571). Rome: Food and Agriculture Organization of the United Nations.
Chicago
Food and Agriculture Organization of the United Nations, . 1989. Horticultural marketing :a resource and training manual for extension officers/ (571). Rome: Food and Agriculture Organization of the United Nations.
Harvard
Food and Agriculture Organization of the United Nations, . (1989). Horticultural marketing :a resource and training manual for extension officers/ (571). Rome: Food and Agriculture Organization of the United Nations.
MLA
Food and Agriculture Organization of the United Nations, . Horticultural marketing :a resource and training manual for extension officers/ (571). Rome: Food and Agriculture Organization of the United Nations. 1989.