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APA-viiteGerlman, A., & King, G. (1993). Why are American presidential election campaign poll so variable when votes are so predictable? British journal of political science, 09-451.
Chicago-tyylinen lähdeviittausGerlman, Andrew, ja Gary King. "Why Are American Presidential Election Campaign Poll so Variable When Votes Are so Predictable?" British Journal of Political Science 1993: 09-451.
MLA-viiteGerlman, Andrew, ja Gary King. "Why Are American Presidential Election Campaign Poll so Variable When Votes Are so Predictable?" British Journal of Political Science, 1993, pp. 09-451.
Harvard-tyylinen lähdeviittausGerlman, A. & King, G. 1993. Why are American presidential election campaign poll so variable when votes are so predictable? British journal of political science, pp. 09-451.