APA (7th ed.) Zitazioa
Oxford Analytica & Heath, D. America in Perspective: Major Trends in the United States through the 1990s. Houghton Mifflin.
Chicago Style (17th ed.) Zitazioa
Oxford Analytica eta Daniel Heath. America in Perspective: Major Trends in the United States Through the 1990s. Boston, EUA: Houghton Mifflin.
MLA (9th ed.) Zitazioa
Oxford Analytica eta Daniel Heath. America in Perspective: Major Trends in the United States Through the 1990s. Houghton Mifflin.
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