Leo XIII, P. C. C. P. (1924). Encyclical Letter on the Condition of Labor. Brooklyn.
Style de citation Chicago (17e éd.)Leo XIII, Pope; Catholic Church. Pope. Encyclical Letter on the Condition of Labor. Brooklyn, 1924.
Style de citation MLA (8e éd.)Leo XIII, Pope; Catholic Church. Pope. Encyclical Letter on the Condition of Labor. Brooklyn, 1924.
Attention : ces citations peuvent ne pas être correctes à 100%.