1. De Materia Medica (∼64-77 CE);Dioscorides,1933
2. Los Angeles Biomedical Research Institute. Institute, U.S. National Library of Medicine 2013; Available from: http://clinicaltrials.gov/ct2/show/NCT01382069?term=male+contraception&rank=1; accessed Sept 2013.
3. National Library of Medicine. National Institutes of Health, Clinical Trials.gov. 2013; Available from: http://clinicaltrials.gov/ct2/results?term=contraception&recr=Open; accessed Sept 2013.
4. The Humble Little Condom: A History; Amherst;Collier,2007
5. Contraceptive Technology;Hatcher,2007