FAO. (1995). FAO plant production and protection paper N.132: Agro-ecology, cultivation and uses of cactus pear. Rome: FAO.
Chicago-tyylinen lähdeviittausFAO. FAO Plant Production and Protection Paper N.132: Agro-ecology, Cultivation and Uses of Cactus Pear. Rome: FAO, 1995.
MLA-viiteFAO. FAO Plant Production and Protection Paper N.132: Agro-ecology, Cultivation and Uses of Cactus Pear. Rome: FAO, 1995.
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