World Health Organization. Pregnancy, childbirth, postpartum and newborn care: A guide for essential practice.
Chicagoスタイル(17版)引用形式World Health Organization. Pregnancy, Childbirth, Postpartum and Newborn Care: A Guide for Essential Practice.
MLA(8版)引用形式World Health Organization. Pregnancy, Childbirth, Postpartum and Newborn Care: A Guide for Essential Practice.
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