Leech, N. L., Barrett, K. C., & Morgan, G. A. (2008). SPSS for intermediate statistics : use and interpretation / Nancy L. Leech, Karen C. Barrett, George A. Morgan: Use and interpretation (3rd ed.). L. Erlbaum Associates.
Chicago Edition CitationLeech, Nancy L., Karen Caplovitz Barrett, and George A. Morgan. SPSS for Intermediate Statistics : Use and Interpretation / Nancy L. Leech, Karen C. Barrett, George A. Morgan: Use and Interpretation. 3rd ed. New York: L. Erlbaum Associates, 2008.
MLA Edition CitationLeech, Nancy L., et al. SPSS for Intermediate Statistics : Use and Interpretation / Nancy L. Leech, Karen C. Barrett, George A. Morgan: Use and Interpretation. 3rd ed. L. Erlbaum Associates, 2008.