Citazione Stile APA (7a Edizione)

Petersen, S. (1963). A statistical history of the American presidential elections. Ungar.

Citazione stile Chigago Style (17a edizione)

Petersen, Svend. A Statistical History of the American Presidential Elections. New York: Ungar, 1963.

Citatione MLA (9a ed.)

Petersen, Svend. A Statistical History of the American Presidential Elections. Ungar, 1963.