1. Walton A. J. A.Textbook of Surgical Dyspepsia. E. Arnold & Co.1923 p.554.
2. Acute Cholecystitis;Hinchley E. H.;Surg. Gynae. Obstet,1965
3. ACUTE CHOLECYSTITIS: AN APPRAISAL OF CURRENT METHODS OF TREATMENT
4. Clinical study of 1060 patients with acute cholecystitis;Becker W. P.;Surg. Gynae. Obstet,1957
5. Acute Cholecystitis