Cita APA (7a ed.)
Crapol, E. P. (2012). John Tyler: The accidental president. University of North Carolina Press.
Cita Chicago Style (17a ed.)
Crapol, Edward P. John Tyler: The Accidental President. Chapel Hill: University of North Carolina Press, 2012.
Cita MLA (9a ed.)
Crapol, Edward P. John Tyler: The Accidental President. University of North Carolina Press, 2012.
Precaución: Estas citas no son 100% exactas.