Cita APA

Shannon, D. A. Twentieth century America / by David A. Shannon ; maps by Willis R. Heath (2.). Chicago : Rand McNally.

Citación estilo Chicago

Shannon, David A. Twentieth Century America / By David A. Shannon ; Maps By Willis R. Heath. 2. Chicago : Rand McNally.

Cita MLA

Shannon, David A. Twentieth Century America / By David A. Shannon ; Maps By Willis R. Heath. 2. Chicago : Rand McNally.

Precaución: Estas citas no son 100% exactas.