Catholic Church. Pope (1878-1903 : Leo XIII). (1900). Rerum novarum: Encyclical letter of Pope Leo XIII on the condition of labor. Paulist Press.
Lua i Stíl Chicago (17ú heag.)Catholic Church. Pope (1878-1903 : Leo XIII). Rerum Novarum: Encyclical Letter of Pope Leo XIII on the Condition of Labor. New York: Paulist Press, 1900.
Lua MLA (8ú heag.)Catholic Church. Pope (1878-1903 : Leo XIII). Rerum Novarum: Encyclical Letter of Pope Leo XIII on the Condition of Labor. Paulist Press, 1900.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.