APA (7th ed.) Citation

Mann, H. K., & Hollnsteiner, J. (1925). The lives of the popes in the early middle ages (2nd ed.). K. Paul.

Chicago Style (17th ed.) Citation

Mann, Horace K., and Johannes Hollnsteiner. The Lives of the Popes in the Early Middle Ages. 2nd ed. London: K. Paul, 1925.

MLA (8th ed.) Citation

Mann, Horace K., and Johannes Hollnsteiner. The Lives of the Popes in the Early Middle Ages. 2nd ed. K. Paul, 1925.

Warning: These citations may not always be 100% accurate.