McKay, J. P., Buckler, J., & Hill, B. D. (1991). A history of western society (4th ed.). Houghton Mifflin Company Boston.
Lua i Stíl Chicago (17ú heag.)McKay, John P., John Buckler, agus Bennett D. Hill. A History of Western Society. 4th ed. Dallas Geneva, Illinois: Houghton Mifflin Company Boston, 1991.
Lua MLA (9ú heag.)McKay, John P., et al. A History of Western Society. 4th ed. Houghton Mifflin Company Boston, 1991.
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