Perry, M. (2007). Western civilization: Ideas, politics and society (8th ed.). Houghton Mifflin Harcourt Pub.
Chicago-viite (17. p.)Perry, Marvin. Western Civilization: Ideas, Politics and Society. 8th ed. Boston: Houghton Mifflin Harcourt Pub, 2007.
MLA-viite (9. p.)Perry, Marvin. Western Civilization: Ideas, Politics and Society. 8th ed. Houghton Mifflin Harcourt Pub, 2007.
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