Não informado. Leaflet. Purdue University, Agricultural Extension Service.
Chicagoスタイル(17版)引用形式Não informado. Leaflet. Lafayette, Ind: Purdue University, Agricultural Extension Service.
MLA(8版)引用形式Não informado. Leaflet. Purdue University, Agricultural Extension Service.
警告: この引用は必ずしも正確ではありません.