1. Atri M, Nazarnia S, Bret PM et-al. Endovaginal sonographic appearance of benign ovarian masses. Radiographics. 1994;14 (4): 747-60.
2. Fakhry J, Khoury A, Kotval PS et-al. Sonography of autonomous follicular ovarian cysts in precocious pseudopuberty. J Ultrasound Med. 1988;7 (11): 597-603.
3. M.D. CB. Ultrasonography in Obstetrics and Gynocology, A practical approach. Thieme. (2007) ISBN:1588906124.
4. Bluth EI. Ultrasound, a practical approach to clinical problems. Thieme Publishing Group. (2008) ISBN:3131168323.
5. Merz E. Ultrasound in obstetrics and gynecology, Gynecology. Thieme Publishing Group. (2007) ISBN:3137544025.