APA (7th ed.) Citation

British Association for the Study of Headache, Kernick, D., & Goadsby, P. J. (2009). Headache: A practical manual. Oxford University Press.

Chicago Style (17th ed.) Citation

British Association for the Study of Headache, David Kernick, and Peter J. Goadsby. Headache: A Practical Manual. Oxford ; New York: Oxford University Press, 2009.

MLA (9th ed.) Citation

British Association for the Study of Headache, et al. Headache: A Practical Manual. Oxford University Press, 2009.