*{{cite book |first1=Herman J. |last1=Adèr |editor-first1=Herman J. |editor-last1=Adèr |editor-first2=Gideon J. |editor-last2=Mellenbergh |editor-link3=David Hand (statistician) |editor-first3=David J |editor-last3=Hand |title=Advising on research methods : a consultant's companion |publisher=Johannes van Kessel Pub |location=Huizen, Netherlands |year=2008a |chapter=Chapter 14: Phases and initial steps in data analysis |pages=333–356 |ref=harv}} | *{{cite book |first1=Herman J. |last1=Adèr |editor-first1=Herman J. |editor-last1=Adèr |editor-first2=Gideon J. |editor-last2=Mellenbergh |editor-link3=David Hand (statistician) |editor-first3=David J |editor-last3=Hand |title=Advising on research methods : a consultant's companion |publisher=Johannes van Kessel Pub |location=Huizen, Netherlands |year=2008a |chapter=Chapter 14: Phases and initial steps in data analysis |pages=333–356 |ref=harv}} |