APA (7th ed.) Citation

Burge, P. S., & Lewis, S. A. (2004). Authors' reply. Thorax, 59(6), 539.

Chicago Style (17th ed.) Citation

Burge, P. S., and S. A. Lewis. "Authors' Reply." Thorax 59, no. 6 (2004): 539.

MLA (9th ed.) Citation

Burge, P. S., and S. A. Lewis. "Authors' Reply." Thorax, vol. 59, no. 6, 2004, p. 539.