Educational research :
Johnson, Burke.
Educational research : quantitative, qualitative and mixed approaches / Burke Johnson, Larry B. Christensen. - London : SAGE, 2008. - xxiv, 639 p.
1412954563 : KES 5713.20
Education--Research.
Educational research : quantitative, qualitative and mixed approaches / Burke Johnson, Larry B. Christensen. - London : SAGE, 2008. - xxiv, 639 p.
1412954563 : KES 5713.20
Education--Research.