León XIII, P. (1897). Ex actis excerpta in usum scholarum. Fiaccadoriana.
Chicagoスタイル(17版)引用形式León XIII, Papa. Ex Actis Excerpta in Usum Scholarum. Parma: Fiaccadoriana, 1897.
MLA(9版)引用形式León XIII, Papa. Ex Actis Excerpta in Usum Scholarum. Fiaccadoriana, 1897.
警告: この引用は必ずしも正確ではありません.