Παραπομπή APA

George, D. SPSS for windows step by step: A simple guide and reference (10th ed.). Pearson Education Inc.

Παραπομπή Chicago Style

George, Darren. SPSS for Windows Step by Step: A Simple Guide and Reference. 10th ed. New Delhi: Pearson Education Inc.

Παραπομπή MLA

George, Darren. SPSS for Windows Step by Step: A Simple Guide and Reference. 10th ed. Pearson Education Inc.