Não informado. (2003). Perspectives on Sexual and Reproductive Health. Alan Guttmacher Institute.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Perspectives on Sexual and Reproductive Health. New York: Alan Guttmacher Institute, 2003.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Perspectives on Sexual and Reproductive Health. Alan Guttmacher Institute, 2003.
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