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


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