Norman K. Denzin, Yvonna S. Lincoln, editors
Sage Publications, 1994
Buku Referensi
editors, Norman K. Denzin, Yvonna S. Lincoln
Sage , 2018
Buku Teks
Bowling, Ann, author
Open University Press, 2006
Buku Teks
Norman K. Denzin, Yvonna S. Lincoln, editors
Sage Publications, 2000
Buku Referensi
Magnusson, Eva, author
Cambridge University Press, 2015
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