Não informado. (1973). Journal of nurse-midwifery. American College of Nurse-Midwives.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Journal of Nurse-midwifery. New York: American College of Nurse-Midwives, 1973.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Journal of Nurse-midwifery. American College of Nurse-Midwives, 1973.
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