1. Buck Vs. Bell: 274, U.S. 200, p. 207, 1927.
2. Sexual effects of vasectomy;Garrison;J.A.M.A.,1950
3. Medicolegal aspects of sterilization, artificial insemination and abortion;Holman;J.A.M.A.,1954
4. Hughes, J. E.: Eugenic Sterilization in the United States. Pub. Health Reports, supplement 162, pp. 1–45
5. Kansas Rev. Stats. (1923) C. 76, Sect. 177 (quoted by Regan).