APA

Pius XII P., .Mystici corporis christi on the Mystical Body of Christ: Encyclical letter of his holiness Pius XII by Divine providence pope. New York: Paulist Press.

Chicago

Pius XII Pope, .Mystici corporis christi on the Mystical Body of Christ: Encyclical letter of his holiness Pius XII by Divine providence pope. New York: Paulist Press.

Harvard

Pius XII P., .Mystici corporis christi on the Mystical Body of Christ: Encyclical letter of his holiness Pius XII by Divine providence pope. New York: Paulist Press.

MLA

Pius XII Pope, .New York: Paulist Press. .