Discovering statistics using SPSS : (and sex, drugs and rock 'n' roll) / Andy Field. Field, Andy P. SPSS for Windows. Social sciences Statistical methods Computer programs. HA32 .F54 2009 300.285555 FID Includes bibliographical references (p. 809-815) and index. Los Angeles : SAGE Publications, 2009. 2009. 2009 Text xxxii, 821 p. : eng