TY  - BOOK
AU  - Johnson, Burke.
AU  - Christensen, Larry B,
TI  - Educational research: quantitative, qualitative, and mixed approaches 
SN  - 9781412978286
U1  - 370.72 
PY  - 2012///
CY  - Thousand Oaks, Calif.
PB  - SAGE Publications, ©2012
UR  - http://www.worldcat.org/oclc/648922069
ER  -