Não informado. (2009). International Perspectives on Sexual and Reproductive Health. Alan Guttmacher Institute.
Chicago-referens (17:e uppl.)Não informado. International Perspectives on Sexual and Reproductive Health. New York: Alan Guttmacher Institute, 2009.
MLA-referens (8:e uppl.)Não informado. International Perspectives on Sexual and Reproductive Health. Alan Guttmacher Institute, 2009.
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