TY  - BOOK
AU  - Rosenthal, Robert
AU  - Rosnow, Ralph L.
TI  - Essentials of behavioral research: methods and data analysis 
SN  - 0070539294
AV  - BF 76.5 R815e 1991 
PY  - 1991///
CY  - Boston
PB  - McGraw-Hill
ER  -