Citazione APA

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

Stile di citazione Chicago

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

Citazione MLA

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