George, D., & Mallery, P. (2016). IBM SPSS statistics 23 step by step: A simple guide and reference (Fourteenth edition.). Routledge, Taylor & Francis Group.
Chicago Style (17th ed.) CitationGeorge, Darren, and Paul Mallery. IBM SPSS Statistics 23 Step by Step: A Simple Guide and Reference. Fourteenth edition. New York: Routledge, Taylor & Francis Group, 2016.
MLA (9th ed.) CitationGeorge, Darren, and Paul Mallery. IBM SPSS Statistics 23 Step by Step: A Simple Guide and Reference. Fourteenth edition. Routledge, Taylor & Francis Group, 2016.
Warning: These citations may not always be 100% accurate.