APA (7th ed.) Citation

Sayed, N. e., Bäumer, A., El-Sayed, S., Wieland, L., Kronsteiner, D., Eickholz, P., & Pretzl, B. (2019). Twenty years later: Oral health-related quality of life and standard of treatment in patients with chronic periodontitis. Journal of periodontology, 90(4), . https://doi.org/10.1002/JPER.18-0417

Chicago Style (17th ed.) Citation

Sayed, Nihad el, Amelie Bäumer, Shirin El-Sayed, Lars Wieland, Dorothea Kronsteiner, Peter Eickholz, and Bernadette Pretzl. "Twenty Years Later: Oral Health-related Quality of Life and Standard of Treatment in Patients with Chronic Periodontitis." Journal of Periodontology 90, no. 4 (2019). https://doi.org/10.1002/JPER.18-0417.

MLA (9th ed.) Citation

Sayed, Nihad el, et al. "Twenty Years Later: Oral Health-related Quality of Life and Standard of Treatment in Patients with Chronic Periodontitis." Journal of Periodontology, vol. 90, no. 4, 2019, https://doi.org/10.1002/JPER.18-0417.