APA (7th ed.) Citation

Sociedad Europea de Respiratorio, Torres, A., & Woodhead, M. (1997). Pneumonia. European Respiratory Society Journals.

Chicago Style (17th ed.) Citation

Sociedad Europea de Respiratorio, A. Torres, and M. Woodhead. Pneumonia. Sheffield, U.K.: European Respiratory Society Journals, 1997.

MLA (9th ed.) Citation

Sociedad Europea de Respiratorio, et al. Pneumonia. European Respiratory Society Journals, 1997.