APA (7th ed.) Citation

Smalley, B. (1974). Historians in the Middle Ages. Thames and Hudson.

Chicago Style (17th ed.) Citation

Smalley, Beryl. Historians in the Middle Ages. London: Thames and Hudson, 1974.

MLA (9th ed.) Citation

Smalley, Beryl. Historians in the Middle Ages. Thames and Hudson, 1974.

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