Cita APA (7th ed.)

George, D., & Mallery, P. (2010). SPSS for windows step by step: A simple guide and reference, 17.0 update (10th ed.). Allyn & Bacon.

Cita Chicago (17th ed.)

George, Darren, i Paul Mallery. SPSS for Windows Step by Step: A Simple Guide and Reference, 17.0 Update. 10th ed. Boston: Allyn & Bacon, 2010.

Cita MLA (9th ed.)

George, Darren, i Paul Mallery. SPSS for Windows Step by Step: A Simple Guide and Reference, 17.0 Update. 10th ed. Allyn & Bacon, 2010.