Cita APA (7th ed.)

Pfiffner, J. P. (2005). The modern presidency (4th ed.). Thomson/Wadsworth.

Cita Chicago (17th ed.)

Pfiffner, James P. The Modern Presidency. 4th ed. Australia: Thomson/Wadsworth, 2005.

Cita MLA (9th ed.)

Pfiffner, James P. The Modern Presidency. 4th ed. Thomson/Wadsworth, 2005.