Citazione Stile APA (7a Edizione)

Davidson, R. H. (1988). Congress and the presidency: Invitation to struggle. Sage.

Citazione stile Chigago Style (17a edizione)

Davidson, Roger H. Congress and the Presidency: Invitation to Struggle. Newbury Park, Calif: Sage, 1988.

Citatione MLA (9a ed.)

Davidson, Roger H. Congress and the Presidency: Invitation to Struggle. Sage, 1988.