Leech, N. L., Barrett, K. C., & Morgan, G. A. (2015). IBM SPSS for intermediate statistics: Use and interpretation (5. ed.).
Chicago Style (17th ed.) CitationLeech, Nancy L., Karen Caplovitz Barrett, and George A. Morgan. IBM SPSS for Intermediate Statistics: Use and Interpretation. 5. ed. 2015.
MLA (9th ed.) CitationLeech, Nancy L., et al. IBM SPSS for Intermediate Statistics: Use and Interpretation. 5. ed. 2015.
Warning: These citations may not always be 100% accurate.