Léon XIII

MLA

Hayward, Fernand, and Alfred Baudrillart. Léon Xiii. Paris: Bernard Grasset, 1937.

APA

Hayward, F., & Baudrillart, A. (1937). Léon XIII. Paris: Bernard Grasset.

Chicago

Hayward, Fernand, and Alfred Baudrillart. Léon XIII. Paris: Bernard Grasset, 1937.