APA (7th ed.) Citation

Waley, D. (1961). The papal state in the thirteenth century. Macmillan.

Chicago Style (17th ed.) Citation

Waley, Daniel. The Papal State in the Thirteenth Century. London [u.a.]: Macmillan, 1961.

MLA (8th ed.) Citation

Waley, Daniel. The Papal State in the Thirteenth Century. Macmillan, 1961.