Não informado. (2003). Perspectives on Sexual and Reproductive Health. Alan Guttmacher Institute.
Lua i Stíl Chicago (17ú heag.)Não informado. Perspectives on Sexual and Reproductive Health. New York: Alan Guttmacher Institute, 2003.
Lua MLA (8ú heag.)Não informado. Perspectives on Sexual and Reproductive Health. Alan Guttmacher Institute, 2003.
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