Mens nostra. [Encycliek 20 dec. 1929].

MLA

Pius. Mens Nostra. [encycliek 20 Dec. 1929]. Fribourg: St-Paul, 1958.

APA

Pius, P. (1958). Mens nostra. [Encycliek 20 dec. 1929]. Fribourg: St-Paul.

Chicago

Pius Mens Nostra. [encycliek 20 Dec. 1929]. Fribourg: St-Paul, 1958.