This document discusses qualitative research methods and mixing methods approaches. It begins by defining different qualitative research types like case studies, grounded theory, phenomenology, and ethnography. It then discusses multi-strategy research, noting both advantages like breaking down qual-quant divides, but also difficulties integrating methods from different epistemological perspectives. The document outlines arguments for and against mixing methods and different versions of the debate. It also discusses triangulation strategies and other mixed methods approaches like sequential or concurrent designs.