TY  - BOOK
AU  - Edwards,Allen Louis
ED  - Holt, Rinehart and Winston 
TI  - Experimental design in psychological research
SN  - 0030862140
U1  - 150.72  22
PY  - 1972///.
CY  - New York: 
PB  - Holt, Rinehart and Winston, 
KW  - Psychology
KW  - Research
KW  - Ψυχολογία
KW  - Έρευνα
N1  - Includes bibliography: (p. 360-365)
ER  -