TY  - BOOK
AU  - Johnson,Burke
AU  - Christensen,Larry B.
TI  - Educational research: quantitative, qualitative, and mixed approaches 
SN  - 9781544337838
AV  - LB1028.J59 2020 
PY  - 2020///]
CY  - Los Angeles
PB  - SAGE
KW  - Education research
N1  - Sixth edition: 2017; Includes webography; Includes bibliographical references and index
ER  -