Pfiffner, J. P. (2004). The character factor: How we judge America's presidents. Texas A & M University Press.
Chicago-Zitierstil (17. Ausg.)Pfiffner, James P. The Character Factor: How We Judge America's Presidents. College Station, Tex: Texas A & M University Press, 2004.
MLA-Zitierstil (9. Ausg.)Pfiffner, James P. The Character Factor: How We Judge America's Presidents. Texas A & M University Press, 2004.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.