Não informado. (1981). Progress in Obstetrics and Gynaecology. Churchill Livingstone.
Style de citation Chicago (17e éd.)Não informado. Progress in Obstetrics and Gynaecology. New York: Churchill Livingstone, 1981.
Style de citation MLA (8e éd.)Não informado. Progress in Obstetrics and Gynaecology. Churchill Livingstone, 1981.
Attention : ces citations peuvent ne pas être correctes à 100%.