Pollock, P. H., & Pollock, P. H. (2009). An SPSS companion to political anlysis (3rd ed.). CQ Press.
芝加哥风格引文Pollock, Philip H., 与 Philip H. Pollock. An SPSS Companion to Political Anlysis. 3rd ed. Washington: CQ Press, 2009.
MLA引文Pollock, Philip H., 与 Philip H. Pollock. An SPSS Companion to Political Anlysis. 3rd ed. CQ Press, 2009.
警告：这些引文格式不一定是100％准确.