APA (7th ed.) Citation

Grisar, H., Dessoulavy, C. L., & Cappadelta, L. (1911). History of Rome and the popes in the middle ages. B. Herder.

Chicago Style (17th ed.) Citation

Grisar, Hartmann, C. L. Dessoulavy, and Luigi Cappadelta. History of Rome and the Popes in the Middle Ages. St. Louis: B. Herder, 1911.

MLA (8th ed.) Citation

Grisar, Hartmann, et al. History of Rome and the Popes in the Middle Ages. B. Herder, 1911.