Não informado. (1940). Midwives Chronicle and Nursing Notes. Royal College of Midwives.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Midwives Chronicle and Nursing Notes. London: Royal College of Midwives, 1940.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Midwives Chronicle and Nursing Notes. Royal College of Midwives, 1940.
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