The Sage handbook of qualitative research
editors, Norman K. Denzin, Yvonna S. Lincoln
Sage , 2018
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The Sage handbook of qualitative research
edited by Norman K. Denzin, Yvonna S. Lincoln
Sage, 2011
 Buku Referensi
The SAGE encyclopedia of qualitative research methods
Sage Publications, 2008
 eBooks
The SAGE handbook of online research methods
edited by Nigel G. Fielding; Raymond M. Lee; Grant Blank
SAGE Reference, 2017
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The SAGE handbook of early childhood research
edited by Ann Farrell, Sharon Lynn Kagan and E. Kay M. Tisdall
SAGE Publications, 2016
 Buku Teks SO