APA (7th ed.) Citation

Brudenell, M., Byrne, A. J., Simpson, R., Haworth, E., Whitaker, N., Dixon, P., . . . Jelley, D. M. (1989). CORRESPONDENCE. BMJ: British Medical Journal (International Edition), 298(6671), 455.

Chicago Style (17th ed.) Citation

Brudenell, Michael, et al. "CORRESPONDENCE." BMJ: British Medical Journal (International Edition) 298, no. 6671 (1989): 455.

MLA (9th ed.) Citation

Brudenell, Michael, et al. "CORRESPONDENCE." BMJ: British Medical Journal (International Edition), vol. 298, no. 6671, 1989, p. 455.