TY  - BOOK
AU  - Johnson,Burke
AU  - Christensen,Larry B.
TI  - Educational research: quantitative, qualitative, and mixed approaches 
SN  - 0205361269
U1  - 370'.7'2 
PY  - 2004///
CY  - Boston
PB  - Pearson Education
KW  - Education $x Research
N1  - 2nd ed
ER  -