Catholic Church. Pope (1878-1903 : Leo XIII), Catholic Church. Pope (1922-1939 : Pius XI), & Husslein, J. (1940). Social wellsprings: Fourteen Epochal Documents. The Bruce publishing company.
Cita Chicago Style (17a ed.)Catholic Church. Pope (1878-1903 : Leo XIII), Catholic Church. Pope (1922-1939 : Pius XI), y Joseph Husslein. Social Wellsprings: Fourteen Epochal Documents. Milwaukee: The Bruce publishing company, 1940.
Cita MLA (8a ed.)Catholic Church. Pope (1878-1903 : Leo XIII), et al. Social Wellsprings: Fourteen Epochal Documents. The Bruce publishing company, 1940.
Precaución: Estas citas no son 100% exactas.