Fidentem piumque. [Encycliek 20 sept. 1896].

MLA

Leo. Fidentem Piumque. [encycliek 20 Sept. 1896]. Fribourg: Ed. St-Paul, 1958.

APA

Leo, L. (1958). Fidentem piumque. [Encycliek 20 sept. 1896]. Fribourg: Ed. St-Paul.

Chicago

Leo Fidentem Piumque. [encycliek 20 Sept. 1896]. Fribourg: Ed. St-Paul, 1958.