1. Adversaria Anatomica Omnia;Morgagni,1719
2. Elements de Chirurgie Operatorire;Guérin,1864
3. The development of the urogenital organs;Felix,1912
4. Notes on the development of the prepuce;Hunter;J. Anat.,1935
5. The development and abnormalities of the penile urethra;Williams;Acta Anat.,1952