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Dyfyniad Arddull ChicagoFAO. FAO Plant Production and Protection Paper N.89: Vegetable Production Under Arid and Semi-arid Conditions in Tropical Africa. Rome: FAO, 1988.
Dyfyniad MLAFAO. FAO Plant Production and Protection Paper N.89: Vegetable Production Under Arid and Semi-arid Conditions in Tropical Africa. Rome: FAO, 1988.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.