APA (7th ed.) Citation

Hartmann, L. M. (1949). The early mediaeval state: Byzantium, Italy, and the West. Philip.

Chicago Style (17th ed.) Citation

Hartmann, Ludo Moritz. The Early Mediaeval State: Byzantium, Italy, and the West. London: Philip, 1949.

MLA (9th ed.) Citation

Hartmann, Ludo Moritz. The Early Mediaeval State: Byzantium, Italy, and the West. Philip, 1949.