United Nations Development Programme. (1991). Human development report 1991. Oxford University Press for the U.N.D.P..
Chicago-viite (17. p.)United Nations Development Programme. Human Development Report 1991. New York: Oxford University Press for the U.N.D.P., 1991.
MLA-viite (8. p.)United Nations Development Programme. Human Development Report 1991. Oxford University Press for the U.N.D.P., 1991.
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