Cita APA (7a ed.)
Nef, J. U. The United States and Civilization. University of Chicago.
Cita estilo Chicago (17a ed.)
Nef, John U. The United States and Civilization. Chicago, EUA: University of Chicago.
Cita MLA (9a ed.)
Nef, John U. The United States and Civilization. University of Chicago.
Precaución: Estas citas no son 100% exactas.