Schmiedeler, E. 1. N. C. W. C. (1941). The Threat of American Decline. Washington, D.C..
Dyfyniad Arddull ChicagoSchmiedeler, Edgar 1892-1963; National Catholic Welfare Conference. The Threat of American Decline. Washington, D.C., 1941.
Dyfyniad MLASchmiedeler, Edgar 1892-1963; National Catholic Welfare Conference. The Threat of American Decline. Washington, D.C., 1941.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.