Cita APA (7a ed.)

Abulafia, D., & Berend, N. (2016). Medieval frontiers: Concepts and practices. Routledge.

Cita Chicago Style (17a ed.)

Abulafia, David, y Nora Berend. Medieval Frontiers: Concepts and Practices. London, [England] ; New York, New York: Routledge, 2016.

Cita MLA (9a ed.)

Abulafia, David, y Nora Berend. Medieval Frontiers: Concepts and Practices. Routledge, 2016.