Cita APA (7th ed.)
Krent, H. J. (2005). Presidential powers. New York University Press.
Cita Chicago (17th ed.)
Krent, Harold J. Presidential Powers. New York: New York University Press, 2005.
Cita MLA (9th ed.)
Krent, Harold J. Presidential Powers. New York University Press, 2005.
Atenció: Aquestes cites poden no estar 100% correctes.