APA (7th ed.) Citation

Pattinson, K., Myers, S., & Gardner-Thorpe, C. (2004). Problems with capnography at high altitude.

Chicago Style (17th ed.) Citation

Pattinson, K., S. Myers, and C. Gardner-Thorpe. Problems with Capnography at High Altitude. 2004.

MLA (9th ed.) Citation

Pattinson, K., et al. Problems with Capnography at High Altitude. 2004.