Educational research :
JOHNSON, Burke.
Educational research : quantitative, qualitative and mixed approaches / Burke Johnson. - Second edition - Boston : Pearson Education; 2004. - 564 p.
Includes bibliographical references and index
0205361269
Christensen, Larry B. 1941
Education--Research
Educational research : quantitative, qualitative and mixed approaches / Burke Johnson. - Second edition - Boston : Pearson Education; 2004. - 564 p.
Includes bibliographical references and index
0205361269
Christensen, Larry B. 1941
Education--Research