Allen, P. (2019). SPSS statistics: A practical guide (4th edition.). Cengage Learning.
Chicago Style (17th ed.) CitationAllen, Peter. SPSS Statistics: A Practical Guide. 4th edition. South Melbourne, Victoria, Australia: Cengage Learning, 2019.
MLA (9th ed.) CitationAllen, Peter. SPSS Statistics: A Practical Guide. 4th edition. Cengage Learning, 2019.
Warning: These citations may not always be 100% accurate.