Hartt, R. L. (1909). The people at play. Houghton Mifflin Co..
Chicagoスタイル(17版)引用形式Hartt, Rollin Lynde. The People at Play. Boston New York: Houghton Mifflin Co., 1909.
MLA(8版)引用形式Hartt, Rollin Lynde. The People at Play. Houghton Mifflin Co., 1909.
警告: この引用は必ずしも正確ではありません.