Citazione Stile APA (7a Edizione)

Ross, R. S., & study guide by Donald C.William. (1996). American national government: Institutions, policy and participation. McGraw-Hill.

Citazione stile Chigago Style (17a edizione)

Ross, Robert S., e study guide by Donald C.William. American National Government: Institutions, Policy and Participation. New York: McGraw-Hill, 1996.

Citatione MLA (9a ed.)

Ross, Robert S., e study guide by Donald C.William. American National Government: Institutions, Policy and Participation. McGraw-Hill, 1996.