Citazione APA

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

Stile di citazione Chicago

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

Citazione MLA

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