APA
Weißenborn I., Ritter J., Geißler K. & Guntinas-Lichius O. (20170307). Comparison of old (75-79 years) to very old (80+ years) hospitalized otorhinolaryngology patients. : European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery.
Chicago
Weißenborn Inga, Ritter Julia, Geißler Katharina and Guntinas-Lichius Orlando. 20170307. Comparison of old (75-79 years) to very old (80+ years) hospitalized otorhinolaryngology patients. : European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery.
Harvard
Weißenborn I., Ritter J., Geißler K. and Guntinas-Lichius O. (20170307). Comparison of old (75-79 years) to very old (80+ years) hospitalized otorhinolaryngology patients. : European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery.
MLA
Weißenborn Inga, Ritter Julia, Geißler Katharina and Guntinas-Lichius Orlando. Comparison of old (75-79 years) to very old (80+ years) hospitalized otorhinolaryngology patients. : European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery. 20170307.