Leo XIII, P. C. C. P. (19). Rerum Novarum- Encyclical Letter of Pope Leo XIII on The Condition of Labor. New York.
Lua i Stíl Chicago (17ú heag.)Leo XIII, Pope; Catholic Church. Pope. Rerum Novarum- Encyclical Letter of Pope Leo XIII on The Condition of Labor. New York, 19.
Lua MLA (8ú heag.)Leo XIII, Pope; Catholic Church. Pope. Rerum Novarum- Encyclical Letter of Pope Leo XIII on The Condition of Labor. New York, 19.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.