Knowledge, S. f. t. E. o. L. (1920). One Mystery Less. New York.
Chicagoスタイル(17版)引用形式Knowledge, Society for the Extension of Liberal. One Mystery Less. New York, 1920.
MLA(8版)引用形式Knowledge, Society for the Extension of Liberal. One Mystery Less. New York, 1920.
警告: この引用は必ずしも正確ではありません.