1. Curtis’ Obstetrics & Gynecology;Irving,1934
2. Bland, P. B. and Goldstein, L.: In Davis’ Gynecology and Obstetrics. Hagerstown, Md., W. F. Prior & Co., Vol. 1, Chap. 19, p. 26.
3. Textbook of Obstetrics;Stander,1945
4. Acute inversion of the uterus, with a report of four cases