Innocent III, leader of Europe 1198 - 1216.

MLA

Sayers, Jane E. Innocent Iii, Leader of Europe 1198 - 1216. London: Longman, 1994.

APA

Sayers, J. E. (1994). Innocent III, leader of Europe 1198 - 1216. London: Longman.

Chicago

Sayers, Jane E. Innocent III, Leader of Europe 1198 - 1216. London: Longman, 1994.