1. National Hospital Ambulatory Medical Care Survey: 2006 Emergency Department summary; number 7; August 6, 2008; Pitts S., Niska R., J.Xu, and Burt C., Ed.D., Division of Health Care Statistics.
2. Triorchidism: an incidental finding and review of literature;Kundu;J Anat Soc India,2001
3. Spermatocele: pathologic and surgical anatomy;Clarke;Arch Surg,1963
4. Author: Robert C. Eyer, M.D.; Section Editor: Michael P. O'Leary, M.D.; Deputy Editor: David M. Rind, M.D.; Evaluation of nonacute scrotal pathology in adult men; UpToDate.Incorporated; URL: http://utdol.com/online/content/topic.do?topicKey=primneph/7784&selectedTitle=1∼95&source=search_result. Last date viewed: October 2, 2009.
5. Disorders of the testis, scrotum, and spermatic cord;McAninch,2000