Cita APA (7a ed.)

Blumenthal, U. (1988). The Investiture Controversy: Church and Monarchy from the Ninth to the Twelfth Century. University of Pennsylvania Press.

Cita Chicago Style (17a ed.)

Blumenthal, Uta-Renate. The Investiture Controversy: Church and Monarchy from the Ninth to the Twelfth Century. Philadelphia [Pa.]: University of Pennsylvania Press, 1988.

Cita MLA (8a ed.)

Blumenthal, Uta-Renate. The Investiture Controversy: Church and Monarchy from the Ninth to the Twelfth Century. University of Pennsylvania Press, 1988.