Cita APA (7a ed.)

Zahn, G. C. (1971). The Great Catholic Upheaval. New York.

Cita Chicago Style (17a ed.)

Zahn, Gordon C. The Great Catholic Upheaval. New York, 1971.

Cita MLA (8a ed.)

Zahn, Gordon C. The Great Catholic Upheaval. New York, 1971.