Παραπομπή σε μορφή APA (7η εκδ.)

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.

Παραπομπή σε μορφή Chicago (17η εκδ.)

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.

Παραπομπή σε μορφή MLA (8th εκδ.)

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.