APA (7th ed.) Citation

George, D., & Mallery, P. (2012). IBM SPSS statistics 19 step by step: A simple guide and reference (12th ed.). Pearson.

Chicago Style (17th ed.) Citation

George, Darren, and Paul Mallery. IBM SPSS Statistics 19 Step by Step: A Simple Guide and Reference. 12th ed. Boston [etc.]: Pearson, 2012.

MLA (9th ed.) Citation

George, Darren, and Paul Mallery. IBM SPSS Statistics 19 Step by Step: A Simple Guide and Reference. 12th ed. Pearson, 2012.