Strauss, Anselm L.
Basics of qualitative research : grounded theory procedures and techniques
Sage, 1990.
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Glaser, Barney G.
The Discovery of grounded theory: strategies for qualitative research
Aldine, 1967
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Locke, Karen
Grounded theory in management reserach
Sage Publications, 2001
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Bryant, Antony
Grounded theory and grounded theorizing: pragmatism in research practice
Oxford University Press, 2017
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Grounded classification: grounded theory and faceted classification
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