SPSS for Windows step by step : a simple guide and reference, 16.0 update /

by George, Darren.
Published 2009

SPSS for Windows step by step : a simple guide and reference, 13.0 update /

by George, Darren.
Published 2006

SPSS for windows step-by-step : a simple guide and reference : 15.0 update /

by George, Darren.
Published 2008