APA (7th ed.) Citation

Khaw, P. T., Elkington, A. R., & Shah, P. (2004). ABC of eyes (4th ed.). BMJ Books.

Chicago Style (17th ed.) Citation

Khaw, P. T., Andrew R. Elkington, and P. Shah. ABC of Eyes. 4th ed. London: BMJ Books, 2004.

MLA (9th ed.) Citation

Khaw, P. T., et al. ABC of Eyes. 4th ed. BMJ Books, 2004.