Ryan, J. A. (1910). Henry George and Private Property. New York.
Chicagoスタイル(17版)引用形式Ryan, John A. Henry George and Private Property. New York, 1910.
MLA(8版)引用形式Ryan, John A. Henry George and Private Property. New York, 1910.
警告: この引用は必ずしも正確ではありません.