TY  - GEN
AU  - Creswell, John W.,
AU  - Guetterman, Timothy C.,
TI  - Educational research: planning, conducting, and evaluating quantitative and qualitative research 
SN  - 9780134519364
PY  - 2019///
CY  - United States
PB  - Pearson
KW  - Education - Research - Methodology
KW  - localuoh
KW  - nvestigación educativa Metodología
KW  - PUC
N1  - An introduction to educational of research -- The steps in the process of research -- Research designs
ER  -