Não informado. (1970). Viewpoints. Indiana University, School of Education.
Chicagoスタイル(17版)引用形式Não informado. Viewpoints. Bloomington, Ind: Indiana University, School of Education, 1970.
MLA(8版)引用形式Não informado. Viewpoints. Indiana University, School of Education, 1970.
警告: この引用は必ずしも正確ではありません.