Frith, l. (1996). Ethics and midwifery issues in contemporary. Butterworth-heinemann.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रFrith, lucy. Ethics and Midwifery Issues in Contemporary. Butterworth-heinemann, 1996.
एमएलए (9वां संस्करण) प्रशस्ति पत्रFrith, lucy. Ethics and Midwifery Issues in Contemporary. Butterworth-heinemann, 1996.
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