Não informado. (2012). Purdue Agricultures Magazine. Purdue University, College of Agriculture.
Chicagoスタイル(17版)引用形式Não informado. Purdue Agricultures Magazine. West Lafayette, Ind: Purdue University, College of Agriculture, 2012.
MLA(8版)引用形式Não informado. Purdue Agricultures Magazine. Purdue University, College of Agriculture, 2012.
警告: この引用は必ずしも正確ではありません.