Dyfyniad APA
(1959). Twenty years of United States Government Programs in Cultural Relations. Committee on Educational Interchange Policy.
Dyfyniad Arddull Chicago
Twenty Years of United States Government Programs in Cultural Relations. New York: Committee on Educational Interchange Policy, 1959.
Dyfyniad MLA
Twenty Years of United States Government Programs in Cultural Relations. Committee on Educational Interchange Policy, 1959.
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