Não informado. (1973). Journal of nurse-midwifery. American College of Nurse-Midwives.
Chicago-Zitierstil (17. Ausg.)Não informado. Journal of Nurse-midwifery. New York: American College of Nurse-Midwives, 1973.
MLA-Zitierstil (8. Ausg.)Não informado. Journal of Nurse-midwifery. American College of Nurse-Midwives, 1973.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.