APA-referens (7:e uppl.)
Barrett, E. (2010). Persons and liberal democracy: The ethical and political thought of Karol Wojtyla/Pope John Paul II. Lexington Books.
Chicago-referens (17:e uppl.)
Barrett, Edward. Persons and Liberal Democracy: The Ethical and Political Thought of Karol Wojtyla/Pope John Paul II. Lanham, Maryland: Lexington Books, 2010.
MLA-referens (9:e uppl.)
Barrett, Edward. Persons and Liberal Democracy: The Ethical and Political Thought of Karol Wojtyla/Pope John Paul II. Lexington Books, 2010.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.