Cita APA

George, D., & Mallery, P. (2008). SPSS for Windows step by step: A simple guide and reference : 15.0 update (8. edition.). Boston: Pearson.

Citación estilo Chicago

George, Darren, y Paul Mallery. SPSS for Windows Step By Step: A Simple Guide and Reference : 15.0 Update. 8. edition. Boston: Pearson, 2008.

Cita MLA

George, Darren, y Paul Mallery. SPSS for Windows Step By Step: A Simple Guide and Reference : 15.0 Update. 8. edition. Boston: Pearson, 2008.