1. Atlas of Contraception
2. Royal College of Obstetricians and Gynaecologists Core Training (Training Portfolio) Module 15: Sexual and Reproductive Health http://www.rcog.org.uk/resources/public/pdf/TP_15_Sexual_and_Reproductive_Health.pdf
3. An international study of the acceptability of a once-a-month pill;Glasier;Hum Reprod,1999
4. Unintended pregnancies and the use of contraception: changes from 1984-1989;Fleissig;BMJ,1991