APA (7th ed.) Citation

Burbidge, N., Gray, P., & Levy, S. Letters (2a ed.).

Chicago Style (17th ed.) Citation

Burbidge, Nicky, Peta Gray, and Sheila Levy. Letters. 2a ed.

MLA (8th ed.) Citation

Burbidge, Nicky, et al. Letters. 2a ed.