APA (7th ed.) Citation

Howe, A., Owen-Smith, V., Richardson, J., Hardyman, R., Leyden, G., Stark, C., . . . Lessard, J. E. (2003). Letters. BMJ: British Medical Journal (International Edition), 326(7387), 498.

Chicago Style (17th ed.) Citation

Howe, Andy, et al. "Letters." BMJ: British Medical Journal (International Edition) 326, no. 7387 (2003): 498.

MLA (9th ed.) Citation

Howe, Andy, et al. "Letters." BMJ: British Medical Journal (International Edition), vol. 326, no. 7387, 2003, p. 498.