APA (7th ed.) Citation

Bartlett, R., & MacKay, A. (1989). Medieval frontier societies. Clarendon Press.

Chicago Style (17th ed.) Citation

Bartlett, Robert, and Angus MacKay. Medieval Frontier Societies. Oxford [England]: Clarendon Press, 1989.

MLA (9th ed.) Citation

Bartlett, Robert, and Angus MacKay. Medieval Frontier Societies. Clarendon Press, 1989.

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