Nichols, A. (2007). The thought of Pope Benedict XVI: An introduction to the theology of Joseph Ratzinger (New ed.). Burns & Oates.
Chicago-referens (17:e uppl.)Nichols, Aidan. The Thought of Pope Benedict XVI: An Introduction to the Theology of Joseph Ratzinger. New ed. London ; New York: Burns & Oates, 2007.
MLA-referens (9:e uppl.)Nichols, Aidan. The Thought of Pope Benedict XVI: An Introduction to the Theology of Joseph Ratzinger. New ed. Burns & Oates, 2007.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.