APA (7th ed.) Citation

Thrupp, S. L. (1967). Early medieval society. Appleton-Century-Crofts.

Chicago Style (17th ed.) Citation

Thrupp, Sylvia L. Early Medieval Society. New York: Appleton-Century-Crofts, 1967.

MLA (9th ed.) Citation

Thrupp, Sylvia L. Early Medieval Society. Appleton-Century-Crofts, 1967.