APA (7th ed.) Zitazioa
Southworth, G. V. D. A First Book in American History with European Beginnings. D. Appleton and Company.
Chicago Style (17th ed.) Zitazioa
Southworth, Gertrude Van Duyn. A First Book in American History with European Beginnings. Nueva York, EUA: D. Appleton and Company.
MLA (9th ed.) Zitazioa
Southworth, Gertrude Van Duyn. A First Book in American History with European Beginnings. D. Appleton and Company.
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