APA (7th ed.) Citation

Joan Pau II, p. (1991). On the hundredth anniversary of Rerum Novarum: Centesimus annus. United States Catholic Conference. Office for Publishing and Promotion Services.

Chicago Style (17th ed.) Citation

Joan Pau II, papa. On the Hundredth Anniversary of Rerum Novarum: Centesimus Annus. Washington, D.C.: United States Catholic Conference. Office for Publishing and Promotion Services, 1991.

MLA (9th ed.) Citation

Joan Pau II, papa. On the Hundredth Anniversary of Rerum Novarum: Centesimus Annus. United States Catholic Conference. Office for Publishing and Promotion Services, 1991.