Não informado. (1981). Progress in Obstetrics and Gynaecology. Churchill Livingstone.
Chicagoスタイル(17版)引用形式Não informado. Progress in Obstetrics and Gynaecology. New York: Churchill Livingstone, 1981.
MLA(8版)引用形式Não informado. Progress in Obstetrics and Gynaecology. Churchill Livingstone, 1981.
警告: この引用は必ずしも正確ではありません.