APA (7th ed.) Zitazioa
Richards, M. D., & Riley, P. F. (2000). Term paper resource guide to twentieth-century world history. Greenwood Press.
Chicago Style (17th ed.) Zitazioa
Richards, Michael D., eta Philip F. Riley. Term Paper Resource Guide to Twentieth-century World History. Westport, Conn.: Greenwood Press, 2000.
MLA (9th ed.) Zitazioa
Richards, Michael D., eta Philip F. Riley. Term Paper Resource Guide to Twentieth-century World History. Greenwood Press, 2000.
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