Citazione Stile APA (7a Edizione)

Welch, S. (1997). Understanding American government (4th ed.). West, Wadsworth.

Citazione stile Chigago Style (17a edizione)

Welch, Susan. Understanding American Government. 4th ed. Belmont, Calif. [u.a.]: West, Wadsworth, 1997.

Citatione MLA (9a ed.)

Welch, Susan. Understanding American Government. 4th ed. West, Wadsworth, 1997.