Gallup, G. H. (1948). A guide to public opinion polls. Princeton University Press.
Chicago Style (17th ed.) CitationGallup, George Horace. A Guide to Public Opinion Polls. Princeton: Princeton University Press, 1948.
ציטוט MLAGallup, George Horace. A Guide to Public Opinion Polls. Princeton University Press, 1948.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.