World Health Organization. Essential elements of obstetric care at first referral level.
Chicagoスタイル(17版)引用形式World Health Organization. Essential Elements of Obstetric Care at First Referral Level.
MLA(8版)引用形式World Health Organization. Essential Elements of Obstetric Care at First Referral Level.
警告: この引用は必ずしも正確ではありません.