TY  - BOOK
AU  - Norusis,M.J.
AU  - Nie,Norman H.
AU  - Hull,C.Hadlai
TI  - SPSS introductory guide: basic statistics and operations 
SN  - 0070475288
PY  - 1982///
CY  - New York
PB  - McGraw-Hill
KW  - SPSS (Electronic computer system)
N1  - Bibliography: p168-169
ER  -