Hayes, P. (1936). Pope Pius XI. National Council of Catholic Men.
Chicagoスタイル(17版)引用形式Hayes, Patrick. Pope Pius XI. Washington, D.C.: National Council of Catholic Men, 1936.
MLA(8版)引用形式Hayes, Patrick. Pope Pius XI. National Council of Catholic Men, 1936.
警告: この引用は必ずしも正確ではありません.