World Health Organization. Essential elements of obstetric care at first referral level.
Цитирование в стиле Чикаго (17-е изд.)World Health Organization. Essential Elements of Obstetric Care at First Referral Level.
Цитирование MLA (8-е изд.)World Health Organization. Essential Elements of Obstetric Care at First Referral Level.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.