George, D., & Mallery, P. (2001). SPSS for windows step by step: A simple guide and reference, 10.0 update (3rd ed.). Allyn and Bacon.
Citace podle Chicago (17th ed.)George, Darren, a Paul Mallery. SPSS for Windows Step by Step: A Simple Guide and Reference, 10.0 Update. 3rd ed. Boston: Allyn and Bacon, 2001.
Citace podle MLA (9th ed.)George, Darren, a Paul Mallery. SPSS for Windows Step by Step: A Simple Guide and Reference, 10.0 Update. 3rd ed. Allyn and Bacon, 2001.
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