Cita APA (7th ed.)
Blumenthal, U. (1988). The investiture controversy: Church and monarchy from the ninth to the twelfth century. University of Pennsylvania Press.
Cita Chicago (17th 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 (9th ed.)
Blumenthal, Uta-Renate. The Investiture Controversy: Church and Monarchy from the Ninth to the Twelfth Century. University of Pennsylvania Press, 1988.
Atenció: Aquestes cites poden no estar 100% correctes.