Schaff, P. (1987). The principle of Protestantism: Philip Schaff. American religious thought of the eighteenth and 19th centuries.
Chicago-Zitierstil (17. Ausg.)Schaff, Philip. "The Principle of Protestantism: Philip Schaff." American Religious Thought of the Eighteenth and 19th Centuries 1987.
MLA-Zitierstil (8. Ausg.)Schaff, Philip. "The Principle of Protestantism: Philip Schaff." American Religious Thought of the Eighteenth and 19th Centuries, 1987.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.