Casti connubii. [Encycliek 31 dec. 1930].

MLA

Pius. Casti Connubii. [encycliek 31 Dec. 1930]. Fribourg: St-Paul, 1958.

APA

Pius, P. (1958). Casti connubii. [Encycliek 31 dec. 1930]. Fribourg: St-Paul.

Chicago

Pius Casti Connubii. [encycliek 31 Dec. 1930]. Fribourg: St-Paul, 1958.