APA (7th ed.) Citation

Costambeys, M., Innes, M., & Maclean, S. (2011). The Carolingian world (1st. published.). Cambridge University.

Chicago Style (17th ed.) Citation

Costambeys, Marios, Matthew Innes, and Simon Maclean. The Carolingian World. 1st. published. Cambridge [etc.]: Cambridge University, 2011.

MLA (9th ed.) Citation

Costambeys, Marios, et al. The Carolingian World. 1st. published. Cambridge University, 2011.