Cita APA (7a ed.)

Hopkins, C. H. (1951). History of the Y.M.C.A. in North America. Association Press.

Cita Chicago Style (17a ed.)

Hopkins, Charles Howard. History of the Y.M.C.A. in North America. New York: Association Press, 1951.

Cita MLA (8a ed.)

Hopkins, Charles Howard. History of the Y.M.C.A. in North America. Association Press, 1951.