Educational research :
Johnson, Burke.
Educational research : quantitative, qualitative, and mixed approaches / Burke Johnson and Larry Christensen. - 4th ed. - Thousand Oaks, Calif. : SAGE Publications, c2012. - xxvi, 621 p. :
Includes bibliographical references and index.
9781412978286
2010032171
Education--Research.
LB1028.J6 2012
Educational research : quantitative, qualitative, and mixed approaches / Burke Johnson and Larry Christensen. - 4th ed. - Thousand Oaks, Calif. : SAGE Publications, c2012. - xxvi, 621 p. :
Includes bibliographical references and index.
9781412978286
2010032171
Education--Research.
LB1028.J6 2012