Pius XI, P., & Treacy, G. C. (1944). Love undying: A simplified edition of the encyclical Casti Connubii, on Christian marriage, by Pope Pius XI. Paulist Press.
Cita Chicago Style (17a ed.)Pius XI, Pope, y Gerald C. Treacy. Love Undying: A Simplified Edition of the Encyclical Casti Connubii, on Christian Marriage, by Pope Pius XI. New York, N.Y.: Paulist Press, 1944.
Cita MLA (8a ed.)Pius XI, Pope, y Gerald C. Treacy. Love Undying: A Simplified Edition of the Encyclical Casti Connubii, on Christian Marriage, by Pope Pius XI. Paulist Press, 1944.
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