APA (7th ed.) Citation

Choi, G., Schultz, M., Levi, M., van der Poll, T., Millo, J., & Garrard, C. (2005). Protein C in pneumonia.

Chicago Style (17th ed.) Citation

Choi, G., M. Schultz, M. Levi, T. van der Poll, J. Millo, and C. Garrard. Protein C in Pneumonia. 2005.

MLA (9th ed.) Citation

Choi, G., et al. Protein C in Pneumonia. 2005.