APA (7th ed.) Citation

Davis, G. R. C., Breay, C., Harrison, J., & Smith, D. M. (2010). Medieval cartularies of Great Britain and Ireland. The British Library.

Chicago Style (17th ed.) Citation

Davis, G. R. C., Claire Breay, Julian Harrison, and David M. Smith. Medieval Cartularies of Great Britain and Ireland. London: The British Library, 2010.

MLA (9th ed.) Citation

Davis, G. R. C., et al. Medieval Cartularies of Great Britain and Ireland. The British Library, 2010.