APA (7th ed.) Citation

A, D., E, D., E, A., R, R., P, P., & C, I. (2014). Authors' response. Critical care (London, England), 18(6), 690.

Chicago Style (17th ed.) Citation

A, Donati, Damiani E, Adrario E, Romano R, Pelaia P, and Ince C. "Authors' Response." Critical Care (London, England) 18, no. 6 (2014): 690.

MLA (9th ed.) Citation

A, Donati, et al. "Authors' Response." Critical Care (London, England), vol. 18, no. 6, 2014, p. 690.