Dyfyniad APA

United Nations Development Programme. (1991). Human development report 1991. Oxford University Press for the U.N.D.P..

Dyfyniad Arddull Chicago

United Nations Development Programme. Human Development Report 1991. New York: Oxford University Press for the U.N.D.P., 1991.

Dyfyniad MLA

United Nations Development Programme. Human Development Report 1991. Oxford University Press for the U.N.D.P., 1991.

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