APA (7th ed.) Citation

Burbidge, N., Gray, P., Levy, S., & Rinvolucri. (1996). Letters. Oxford University Press.

Chicago Style (17th ed.) Citation

Burbidge, Nicky, Peta Gray, Sheila Levy, and Rinvolucri. Letters. Oxford: Oxford University Press, 1996.

MLA (9th ed.) Citation

Burbidge, Nicky, et al. Letters. Oxford University Press, 1996.