Cita APA (7th ed.)
Clay, H. The Annals of America: V. 8 : 1850-1857 : A House Dividing. Encyclopaedia Britannica.
Cita Chicago (17th ed.)
Clay, Henry. The Annals of America: V. 8 : 1850-1857 : A House Dividing. Chicago, EUA: Encyclopaedia Britannica.
Cita MLA (9th ed.)
Clay, Henry. The Annals of America: V. 8 : 1850-1857 : A House Dividing. Encyclopaedia Britannica.
Atenció: Aquestes cites poden no estar 100% correctes.