Creswell, John W., <br/><br/>
Educational research :  planning, conducting, and evaluating quantitative and qualitative research / 
John W. Creswell ; Timothy C. Guetterman. 
 - sixth edition. 
 - United States :  Pearson,  2019 
 - xxii, 655 pages. 
<br/><br/>An introduction to educational of research -- The steps in the process of research -- Research designs. 
<br/><br/><label>ISBN: </label>9780134519364 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education - Research - Methodology.<br/>nvestigación educativa Metodología.
<br/><br/><label>Dewey Class. No.: </label>