Johnson, T. H., & Wish, H. (1966). The Oxford companion to American history (2nd printing.). Oxford University Press.
Cita Chicago Style (17a ed.)Johnson, Thomas Herbert, y Harvey Wish. The Oxford Companion to American History. 2nd printing. New York: Oxford University Press, 1966.
Cita MLA (9a ed.)Johnson, Thomas Herbert, y Harvey Wish. The Oxford Companion to American History. 2nd printing. Oxford University Press, 1966.
Precaución: Estas citas no son 100% exactas.