World Health Organization. (2011). Ensuring balance in national policies on control substances: Guidelines for availability and accessibility of controlled medicines. World Health Organization.
Chicago-viite (17. p.)World Health Organization. Ensuring Balance in National Policies on Control Substances: Guidelines for Availability and Accessibility of Controlled Medicines. Geneva, Switzerland: World Health Organization, 2011.
MLA-viite (8. p.)World Health Organization. Ensuring Balance in National Policies on Control Substances: Guidelines for Availability and Accessibility of Controlled Medicines. World Health Organization, 2011.
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