Roy, R., & Bush, T. (2010). Who broke Lincoln's thumb? Random House.
Cita Chicago Style (17a ed.)Roy, Ron, y Timothy Bush. Who Broke Lincoln's Thumb? New York: Random House, 2010.
Cita MLA (8a ed.)Roy, Ron, y Timothy Bush. Who Broke Lincoln's Thumb? Random House, 2010.
Precaución: Estas citas no son 100% exactas.