Não informado. (1952). World agriculture. International Federation of Agricultural Producers.
Chicagoスタイル(17版)引用形式Não informado. World Agriculture. Paris: International Federation of Agricultural Producers, 1952.
MLA(8版)引用形式Não informado. World Agriculture. International Federation of Agricultural Producers, 1952.
警告: この引用は必ずしも正確ではありません.