TY  - BOOK
AU  - Gibbons,Jean Dickinson
TI  - Nonparametric statistics: an introduction 
T2  - Quantitative Applications in the Social Sciencies
SN  - 0-8039-3951-5
AV  - QA278.8 G52
PY  - 1993///
CY  - Newbury Park, Calif.
PB  - Sage
N1  - Bibliografia: p. 86
ER  -