Hall, Ruth, b. 1933. Marie Stopes: A Biography. Deutsch, 1977, http://University of Waterloo - Porter. 199
McLaren, Angus. A History of Contraception: From Antiquity to the Present Day. B. Blackwell, 1990. 217-8
Pfeffer, Naomi. The Stork and the Syringe: A Political History of Reproductive Medicine. Polity Press, 1993. 92