Key, V. O. (1961). Public opinion and American democracy ([1st ed.].). Knopf.
Chicago Style aipamenaKey, V. O. Public Opinion and American Democracy. [1st ed.]. New York: Knopf, 1961.
MLA aipamenaKey, V. O. Public Opinion and American Democracy. [1st ed.]. Knopf, 1961.
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