APA
(1991). FAO/IBPGR technical guidelines for the safe movement of citrus germplasm. Rome: Food and Agriculture Organization of the United Nations.
Chicago
1991. FAO/IBPGR technical guidelines for the safe movement of citrus germplasm. Rome: Food and Agriculture Organization of the United Nations.
Harvard
(1991). FAO/IBPGR technical guidelines for the safe movement of citrus germplasm. Rome: Food and Agriculture Organization of the United Nations.
MLA
FAO/IBPGR technical guidelines for the safe movement of citrus germplasm. Rome: Food and Agriculture Organization of the United Nations. 1991.