Leo XIII, P. C. C. P. (190). Encyclical letter of the late Pope Leo XIII on the condition of labour. Melbourne.
Chicago Style (17th ed.) CitationLeo XIII, Pope; Catholic Church. Pope. Encyclical Letter of the Late Pope Leo XIII on the Condition of Labour. Melbourne, 190.
MLA (8th ed.) CitationLeo XIII, Pope; Catholic Church. Pope. Encyclical Letter of the Late Pope Leo XIII on the Condition of Labour. Melbourne, 190.
Warning: These citations may not always be 100% accurate.