Não informado. University of Iowa studies in character. Institute of Character Research.
Chicagoスタイル(17版)引用形式Não informado. University of Iowa Studies in Character. Iowa City, Iowa: Institute of Character Research.
MLA(8版)引用形式Não informado. University of Iowa Studies in Character. Institute of Character Research.
警告: この引用は必ずしも正確ではありません.