APA

Catholic Church, . (1944). Five great encyclicals. Labor. Education. Marriage. Reconstructing the Social Order. Atheistic Communism: Leo XIII on The Condition of labor, Pius XI of Christian Education of Youth; Pius XI on Christian Marriage; Pius XI on Reconstructing the social order; Pius XI on Atheistic Communism. New York: The Paulist Press.

Chicago

Catholic Church, . 1944. Five great encyclicals. Labor. Education. Marriage. Reconstructing the Social Order. Atheistic Communism: Leo XIII on The Condition of labor, Pius XI of Christian Education of Youth; Pius XI on Christian Marriage; Pius XI on Reconstructing the social order; Pius XI on Atheistic Communism. New York: The Paulist Press.

Harvard

Catholic Church, . (1944). Five great encyclicals. Labor. Education. Marriage. Reconstructing the Social Order. Atheistic Communism: Leo XIII on The Condition of labor, Pius XI of Christian Education of Youth; Pius XI on Christian Marriage; Pius XI on Reconstructing the social order; Pius XI on Atheistic Communism. New York: The Paulist Press.

MLA

Catholic Church, . Five great encyclicals. Labor. Education. Marriage. Reconstructing the Social Order. Atheistic Communism: Leo XIII on The Condition of labor, Pius XI of Christian Education of Youth; Pius XI on Christian Marriage; Pius XI on Reconstructing the social order; Pius XI on Atheistic Communism. New York: The Paulist Press. 1944.