APA (7th ed.) Zitazioa
Crapol, E. P. (2012). John Tyler: The accidental president. University of North Carolina Press.
Chicago Style (17th ed.) Zitazioa
Crapol, Edward P. John Tyler: The Accidental President. Chapel Hill: University of North Carolina Press, 2012.
MLA (9th ed.) Zitazioa
Crapol, Edward P. John Tyler: The Accidental President. University of North Carolina Press, 2012.
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