APA (7th ed.) Citation

AM, K., AD, G., SD, S., & DC, A. (2014). Authors' response. Critical care (London, England), 18(6), 645.

Chicago Style (17th ed.) Citation

AM, Kaynar, Gregory AD, Shapiro SD, and Angus DC. "Authors' Response." Critical Care (London, England) 18, no. 6 (2014): 645.

MLA (9th ed.) Citation

AM, Kaynar, et al. "Authors' Response." Critical Care (London, England), vol. 18, no. 6, 2014, p. 645.