Perry, M. (1992). Western civilization: Ideas, politics & society (4th ed.). Houghton Mifflin Co..
Lua i Stíl Chicago (17ú heag.)Perry, Marvin. Western Civilization: Ideas, Politics & Society. 4th ed. Dallas: Houghton Mifflin Co., 1992.
Lua MLA (9ú heag.)Perry, Marvin. Western Civilization: Ideas, Politics & Society. 4th ed. Houghton Mifflin Co., 1992.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.