El Método BillingsDra. Evelyn Billings, Dra. Ann WestMore, Pam Brewster, Equipo Editorial, Raúl Ostos García · First published 2016Open the Tome
The Billings method of natural family planningEvelyn Billings, Ann Westmore · First published 1988Open the Tome
Abortion in South Africa and attitudes of Natal medical practitioners towards South African abortion legislationJean Ann Westmore · First published 1977Open the Tome
