1. Allen, J. (1999). Worlds within cities. In D. Massey, J. Allen, & S. Pile (Eds.), City worlds (pp. 54-97). London : Routledge.
2. Talking whilst walking: a geographical archaeology of knowledge
3. Atkinson, P. & Coffey, A. (2002). Revisiting the relationship between participant observation and interviewing. In J. F. Gubrium & J. A. Holstein (Eds.), Handbook of interview research (pp. 801-814). Thousand Oaks, CA: Sage.