Não informado. Iowa State College bulletin. Iowa State College of Agriculture and Mechanic Arts.
Chicagoスタイル(17版)引用形式Não informado. Iowa State College Bulletin. Ames, Iowa: Iowa State College of Agriculture and Mechanic Arts.
MLA(8版)引用形式Não informado. Iowa State College Bulletin. Iowa State College of Agriculture and Mechanic Arts.
警告: この引用は必ずしも正確ではありません.