Fry, C.L., Hall, W., Ritter, A. and Jenkinson, R. (2006) The ethics of paying drug users who participate in research: A review and practical recommendations. Journal of Empirical Research on Human Research Ethics, 1, 4, 21-36.

Gadd, D. (2012) ‘In-Depth Interviewing and Psychosocial Case Study Analysis’ in D. Gadd, S. Karstedt  and S.F. Messner (eds) The SAGE Handbook of Criminological Research Methods. London: Sage, pp36-48.

Gadd, D. and Dixon, B. (2011) Losing the Race: Thinking Psychosocially about Racially Motivated Crime. London: Karnac

Garfield, S., Reavey, P., & Kotecha (2010). Footprints in a toxic landscape: Reflexivity and validation in the free association narrative interview (FANI) method. Qualitative research in Psychology, 7, 2, 156-169.

Hollway, W. and Jefferson, T. (2012) Doing Qualitative Research Differently: A Psychosocial Approach. (2nd Edition) London: Sage.

Maher, L. (2000) Sexed Work: Gender, Race, and Resistance in a Brooklyn Drug Market. Oxford: Oxford University Press.

McKeganey, N. (2001) To pay or not to pay: Respondents’ motivation for participating in research. Addiction, 96, 9, 1237-1375.

Noaks, L. and Wincup, E. (2004) Criminological Research: Understanding Qualitative Methods. London: Sage.

Plummer, K. (2001) Documents of Life 2: An Invitation to a Critical Humanism. London: Sage.

Seddon, T. (2005) Paying drug users to take part in research: Justice, human rights and business perspectives on the use of incentive payments. Addiction Research and Theory, 13, 2, 101-109.

Wengraf, T. (2001) Qualitative Research Interviewing: Biographic Narratives and Semi-structured Methods. London: Sage

Williamson, E., Goodenough, T., Kent, J. and Ashcroft, R. (2005) Conducting research with children: The limits of confidentiality and child protection protocols. Children & Society, 19, 5, 397-409.