APA(7版)引用形式

Não informado. (1946). Iowa farm science. Iowa State University of Science and Technology, Cooperative Extension Service.

Chicagoスタイル(17版)引用形式

Não informado. Iowa Farm Science. Ames, Iowa: Iowa State University of Science and Technology, Cooperative Extension Service, 1946.

MLA(8版)引用形式

Não informado. Iowa Farm Science. Iowa State University of Science and Technology, Cooperative Extension Service, 1946.

警告: この引用は必ずしも正確ではありません.