Gallstones. American College of Gastroenterology. Accessed November 4, 2014. http://s3.gi.org/patients/cgp/pdf/gallstones.pdf
Feldman M, Friedman L, & Brandt L. 2010. Sleisenger and Fordtran's gastrointestinal and liver disease [9th ed.]; 68, 1089-1120.e5. Philadelphia: Saunders Elsevier.
Overby W, et al 2010. Guidelines for the clinical application of laparoscopic biliary tract surgery. Retrieved from http://www.sages.org/publication/id/06/.
Turner P, & Malangoni M. 2013. Cholecystectomy: surgical removal of the gallbladder. Accessed November 24, 2014. https://www.facs.org/~/media/files/education/patient%20ed/cholesys.ashx.