APA (7th ed.) Citation

Catholic Church. Pope (1878-1903 : Leo XIII), Treacy, G. C., & Leo XIII, P. (1943). Labor's charter of liberty. Paulist Press.

Chicago Style (17th ed.) Citation

Catholic Church. Pope (1878-1903 : Leo XIII), Gerald C. Treacy, and Pope Leo XIII. Labor's Charter of Liberty. New York: Paulist Press, 1943.

MLA (8th ed.) Citation

Catholic Church. Pope (1878-1903 : Leo XIII), et al. Labor's Charter of Liberty. Paulist Press, 1943.