Governmental Affairs Institute (U.S.) & Scammon, R. M. (1965). America at the polls: A handbook of American presidential election statistics, 1920-1964. University of Pittsburgh Press.
Chicago Style (17th ed.) CitationGovernmental Affairs Institute (U.S.) and Richard M.,. Scammon. America at the Polls: A Handbook of American Presidential Election Statistics, 1920-1964. Pittsburgh: University of Pittsburgh Press, 1965.
MLA (9th ed.) CitationGovernmental Affairs Institute (U.S.) and Richard M.,. Scammon. America at the Polls: A Handbook of American Presidential Election Statistics, 1920-1964. University of Pittsburgh Press, 1965.