APA (7th ed.) Citation

Leo XIII. Papst. (1931). Leonis XIII Encyclica Rerum novarum de opificum conditione: (15 maii 1891). Desclée.

Chicago Style (17th ed.) Citation

Leo XIII. Papst. Leonis XIII Encyclica Rerum Novarum De Opificum Conditione: (15 Maii 1891). Romae [u.a.]: Desclée, 1931.

MLA (9th ed.) Citation

Leo XIII. Papst. Leonis XIII Encyclica Rerum Novarum De Opificum Conditione: (15 Maii 1891). Desclée, 1931.

Warning: These citations may not always be 100% accurate.