Leo XIII, P. (1936). On the condition of the working classes (Rerum novarum): Encyclical of His Holiness Pope Leo XIII : arranged for study clubs, with questions and references. New York.
Lua i Stíl Chicago (17ú heag.)Leo XIII, Pope. On the Condition of the Working Classes (Rerum Novarum): Encyclical of His Holiness Pope Leo XIII : Arranged for Study Clubs, with Questions and References. New York, 1936.
Lua MLA (8ú heag.)Leo XIII, Pope. On the Condition of the Working Classes (Rerum Novarum): Encyclical of His Holiness Pope Leo XIII : Arranged for Study Clubs, with Questions and References. New York, 1936.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.