APA (7th ed.) Zitazioa

Krent, H. J. (2005). Presidential powers. New York University Press.

Chicago Style (17th ed.) Zitazioa

Krent, Harold J. Presidential Powers. New York: New York University Press, 2005.

MLA (9th ed.) Zitazioa

Krent, Harold J. Presidential Powers. New York University Press, 2005.