Research design qualitative, quantitative, and mixed methods approaches door Creswell, John W., Creswell, J. David

100 questions (and answers) about research ethics door Anderson, Emily E., Corneli, Amy

Investigative research theory and practice door Layder, Derek

Designing and conducting mixed methods research door Creswell, John W., Plano Clark, Vicki L.

A concise introduction to mixed methods research door Creswell, John W.

Automated data collection with R a practical guide to Web scraping and text mining door Munzert, Simon

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Web survey methodology door Callegaro, Mario, Lozar Manfreda, Katja, Vehovar, Vasja

Focus groups theory and practice door Stewart, David W., Shamdasani, Prem N.

Managing and sharing research data a guide to good practice door Corti, Louise, Eynden, Veerle van den, Bishop, Libby, Woollard, Matthew

Qualitative methodology a practical guide