Cita APA (7th ed.)
Southworth, G. V. D. A First Book in American History with European Beginnings. D. Appleton and Company.
Cita Chicago (17th ed.)
Southworth, Gertrude Van Duyn. A First Book in American History with European Beginnings. Nueva York, EUA: D. Appleton and Company.
Cita MLA (9th ed.)
Southworth, Gertrude Van Duyn. A First Book in American History with European Beginnings. D. Appleton and Company.
Atenció: Aquestes cites poden no estar 100% correctes.