TY  - BOOK
AU  - Johnson, Burke R., Christensen, Larry 
TI  - Educational Research: Quantitative, Qualitative and Mixed Approaches 
SN  - 978-1-5063-8659-1
U1  - Cir. 370.72 J66 C2017  
PY  - 2017///
CY  - California, 
PB  - Sage Publications, Inc 
ER  -