Citazione Stile APA (7a Edizione)

Gallup, G. H. (1948). A guide to public opinion polls. Princeton University Press.

Citazione stile Chigago Style (17a edizione)

Gallup, George Horace. A Guide to Public Opinion Polls. Princeton: Princeton University Press, 1948.

Citatione MLA (9a ed.)

Gallup, George Horace. A Guide to Public Opinion Polls. Princeton University Press, 1948.