کتاب های Duncan Cramer.
![Research Methods in Psychology](http://cdn.ketabkoo.com/covers/11/1103034-n.jpg)
Research Methods in Psychology
Dennis Howitt, Duncan Cramer, 2016![Advanced Quantative Data Analysis](http://cdn.ketabkoo.com/covers/12/1243044-n.jpg)
Advanced Quantative Data Analysis
Duncan Cramer, 2003![Introduction to statistics in psychology [with SPSS]](http://cdn.ketabkoo.com/covers/12/1251122-n.jpg)
Introduction to statistics in psychology [with SPSS]
Cramer, Duncan; Howitt, Dennis, 2014![Introduction to SPSS in Psychology](http://cdn.ketabkoo.com/covers/13/1325965-n.jpg)
Introduction to SPSS in Psychology
Denniss Howitt, Duncan Cramer, 2017![Introduction to research methods in psychology](http://cdn.ketabkoo.com/covers/13/1351198-n.jpg)
Introduction to research methods in psychology
Dennis Howitt; Duncan Cramer, 2014![Introduction to SPSS in psychology : for version 22 and earlier](http://cdn.ketabkoo.com/covers/13/1363963-n.jpg)
Introduction to SPSS in psychology : for version 22 and earlier
Duncan Cramer; Dennis Howitt;, 2014![Research Methods in Psychology](http://cdn.ketabkoo.com/covers/14/1489698-n.jpg)
Research Methods in Psychology
Dennis Howitt, Duncan Cramer, 2020![Understanding Statistics in Psychology with SPSS](http://cdn.ketabkoo.com/covers/14/1498893-n.jpg)