World Health Organization. (2012). Safe abortion: Technical and policy guidance for health systems (2nd ed.). World Health Organization.
Chicago-viite (17. p.)World Health Organization. Safe Abortion: Technical and Policy Guidance for Health Systems. 2nd ed. Geneva: World Health Organization, 2012.
MLA-viite (8. p.)World Health Organization. Safe Abortion: Technical and Policy Guidance for Health Systems. 2nd ed. World Health Organization, 2012.
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