APA (7th ed.) Citation

B, S., P, L., M, M., & N, F. (2021). Authors' reply to Bradley. BMJ (Clinical research ed.), 373, n1518. https://doi.org/10.1136/bmj.n1518

Chicago Style (17th ed.) Citation

B, Stuart, Little P, Moore M, and Francis N. "Authors' Reply to Bradley." BMJ (Clinical Research Ed.) 373 (2021): n1518. https://doi.org/10.1136/bmj.n1518.

MLA (9th ed.) Citation

B, Stuart, et al. "Authors' Reply to Bradley." BMJ (Clinical Research Ed.), vol. 373, 2021, p. n1518, https://doi.org/10.1136/bmj.n1518.