Cita APA (7a ed.)
Maps.com (Firm) & ebrary, Inc. (1999). Election of 1860. Maps.com.
Cita Chicago Style (17a ed.)
Maps.com (Firm) y Inc ebrary. Election of 1860. [S.l.]: Maps.com, 1999.
Cita MLA (9a ed.)
Maps.com (Firm) y Inc ebrary. Election of 1860. Maps.com, 1999.
Precaución: Estas citas no son 100% exactas.