Ray, J. L. (1990). Global politics (4th ed.). Houghton Mifflin Co..
Tohutoru Kātū Chicago (17th ed.)Ray, James Lee. Global Politics. 4th ed. Boston: Houghton Mifflin Co., 1990.
Tohutoro MLA (9th ed.)Ray, James Lee. Global Politics. 4th ed. Houghton Mifflin Co., 1990.
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