APA način citiranja (7. izdanje)
Weigel, G., & Royal, R. A Century of Catholic Social Thought: Essays on Rerum novarum and Nine Other Key Documents. Ethics and Public Policy Center.
Čikaški stil citiranja (17. izdanje)
Weigel, George, i Robert Royal. A Century of Catholic Social Thought: Essays on Rerum Novarum and Nine Other Key Documents. Washington, EUA: Ethics and Public Policy Center.
MLA način citiranja (9. izdanje)
Weigel, George, i Robert Royal. A Century of Catholic Social Thought: Essays on Rerum Novarum and Nine Other Key Documents. Ethics and Public Policy Center.
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