Não informado. (1973). Journal of nurse-midwifery. American College of Nurse-Midwives.
Chicago (17e ed.) BronvermeldingNão informado. Journal of Nurse-midwifery. New York: American College of Nurse-Midwives, 1973.
MLA (8e ed.) BronvermeldingNão informado. Journal of Nurse-midwifery. American College of Nurse-Midwives, 1973.
Let op: Deze citaties zijn niet altijd 100% accuraat.