Annual Meeting of the American Association of Planned Parenthood Physiacians Chicago/Denver & Lewit, S. (1967). Advances in planned parenthood: Proceedings of the 3rd and 4th Annual Meeting of the American Association of Planned Parenthood Physicians, Chicago, Illinois, May 1965/Denver, Colorado, April 1966. Excerpta Medica Foundation.
Παραπομπή σε μορφή Chicago (17η εκδ.)Annual Meeting of the American Association of Planned Parenthood Physiacians Chicago/Denver και Sarah Lewit. Advances in Planned Parenthood: Proceedings of the 3rd and 4th Annual Meeting of the American Association of Planned Parenthood Physicians, Chicago, Illinois, May 1965/Denver, Colorado, April 1966. Amsterdam: Excerpta Medica Foundation, 1967.
Παραπομπή σε μορφή MLA (8th εκδ.)Annual Meeting of the American Association of Planned Parenthood Physiacians Chicago/Denver και Sarah Lewit. Advances in Planned Parenthood: Proceedings of the 3rd and 4th Annual Meeting of the American Association of Planned Parenthood Physicians, Chicago, Illinois, May 1965/Denver, Colorado, April 1966. Excerpta Medica Foundation, 1967.
