APA Citatie

Enck, P., Leinert, J., Smid, M., Köhler, T., & Schwille-Kiuntke, J. (2015). Prevalence of constipation in the German population – a representative survey (GECCO). United European Gastroenterol J.

Chicago Style citaat

Enck, Paul, Johannes Leinert, Menno Smid, Thorsten Köhler, en Juliane Schwille-Kiuntke. "Prevalence of Constipation in the German Population – a Representative Survey (GECCO)." United European Gastroenterol J 2015.

MLA citatie

Enck, Paul, et al. "Prevalence of Constipation in the German Population – a Representative Survey (GECCO)." United European Gastroenterol J 2015.