Hopkins, C. H. (1951). History of the Y.M.C.A. in North America. Association Press.
Chicagoスタイル(17版)引用形式Hopkins, Charles Howard. History of the Y.M.C.A. in North America. New York: Association Press, 1951.
MLA(8版)引用形式Hopkins, Charles Howard. History of the Y.M.C.A. in North America. Association Press, 1951.
警告: この引用は必ずしも正確ではありません.