There are a number of texts that discuss qualitative and other research methods in the library, including:
Advancing qualitative methods in criminology and criminal justice HV7419.A38 2012 (Floor 4)
Analyzing qualitative data : systematic approaches H62 .B438 2017 (Floor 4)
Case study research : design and methods H62 .Y56 2009 (on Reserve)
The craft of research. 4th ed. Q180.55.M4 B66 2016 (Floor 3 and online)
Criminological research : understanding qualitative methods HV6024.5 .N65 2004 (Floor 4 and online)
Encyclopedia of social measurement (online)
Focus assessment studies: a qualitative approach to data collection (online)
Handbook of narrative inquiry : mapping a methodology H61.295 .H36 2007 (Floor 4 and online)
The quality of qualitative research H62.S38 (Floor 4 and online)
Research design : qualitative, quantitative, and mixed methods approaches H62 .C6963 2018 (Floor 4)
Selecting the right analyses for your data: quantitative, qualitative, and mixed methods (online)