1. Chalmers J. A. Endometriosis. Butterworth, Sevenoaks 1975; 9, Chapter 2
2. Haines M., Taylor C. W. Gynecological Pathology, second edition. Churchill Livingstone, Edinburgh 1975; 536, chapter 17
3. Endometriosis in an Abdominal Scar
4. Jones H. W., Jones J. J. Novak's textbooks of Gynecology. Williams & Wilkins, Baltimore, London 1975; 622