Cita APA (7a ed.)
Johnson, T. H. (1966). The companion to american history. Oxford university press.
Cita Chicago Style (17a ed.)
Johnson, Thomas H. The Companion to American History. New york: Oxford university press, 1966.
Cita MLA (9a ed.)
Johnson, Thomas H. The Companion to American History. Oxford university press, 1966.
Precaución: Estas citas no son 100% exactas.