APA
Clayton J. F., . (1941). Pope Innocent III and His Times. Milwaukee: The Bruce Publishing Company.
Chicago
Clayton Joseph F.R.Hist.S, . 1941. Pope Innocent III and His Times. Milwaukee: The Bruce Publishing Company.
Harvard
Clayton J. F., . (1941). Pope Innocent III and His Times. Milwaukee: The Bruce Publishing Company.
MLA
Clayton Joseph F.R.Hist.S, . Pope Innocent III and His Times. Milwaukee: The Bruce Publishing Company. 1941.
