Mills, J., & Birks, M. Qualitative methodology: A practical guide.
Cita Chicago (17th ed.)Mills, Jane, i Melanie Birks. Qualitative Methodology: A Practical Guide.
Cita MLA (8th ed.)Mills, Jane, i Melanie Birks. Qualitative Methodology: A Practical Guide.
Atenció: Aquestes cites poden no estar 100% correctes.