ISBN 978-3-319-43310-3. ↑ E. S. Talbot, "Inheritance of circumcision effects", Medicine 1898, 4:473-475. ↑ Darwin, Charles (1868), "Variation of Plants and Animals Under Domestication", Volume 1, Chapter XIV. ↑ The Fathers According to Rabbi Nathan, translated from the Hebrew by Judah Goldin, Yale Judaica Series 10, Chapter 2, p 23. ↑ Meri, Josef W.; Bacharach, Jere L. Medieval Islamic civilization.