Bradfield, D. J. (1966). Guide to extension training. Food and Agriculture Organization of the United Nations.
Chicagoスタイル(17版)引用形式Bradfield, D. J. Guide to Extension Training. Rome: Food and Agriculture Organization of the United Nations, 1966.
MLA(8版)引用形式Bradfield, D. J. Guide to Extension Training. Food and Agriculture Organization of the United Nations, 1966.
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