Gastroenterology [Elektronische Ressource]: Official publication of the American Gastroenterological Association. Elsevier.
Citazione stile Chigago Style (17a edizione)Gastroenterology [Elektronische Ressource]: Official Publication of the American Gastroenterological Association. Philadelphia, Pa.: Elsevier.
Citatione MLA (8a ed.)Gastroenterology [Elektronische Ressource]: Official Publication of the American Gastroenterological Association. Elsevier.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.