Mann, H. K. (1925). The lives of the popes in the Middle Ages: X, The Popes at the height of their temporal influence. Innocent II to blessed Benedict XI. 1130-1305. v. X. 1159-1198 (2nd ed.). Kegan Paul, Trench Trubner & Co.
Chicago Style (17th ed.) CitationMann, Horace K. The Lives of the Popes in the Middle Ages: X, The Popes at the Height of Their Temporal Influence. Innocent II to Blessed Benedict XI. 1130-1305. V. X. 1159-1198. 2nd ed. London: Kegan Paul, Trench Trubner & Co, 1925.
MLA (9th ed.) CitationMann, Horace K. The Lives of the Popes in the Middle Ages: X, The Popes at the Height of Their Temporal Influence. Innocent II to Blessed Benedict XI. 1130-1305. V. X. 1159-1198. 2nd ed. Kegan Paul, Trench Trubner & Co, 1925.
Warning: These citations may not always be 100% accurate.