1. Adams, L. (2011). Learning a new skill is easier said than done. Gordon Training International. Accessed November 1, 2016, from http://www.gordontraining.com/free-workplace-articles/learning-a-new-skill-is-easier-said-than-done/
2. Alford, J., Hartley, J., Yates, S., & Hughes, O. (2016). Into the purple zone: Deconstructing the politics/administration division. American Review of Public Administration. doi: 10.1177/0275074016638481 .
3. Althaus, C., Bridgman, P., & Davis, G. (2013). The Australian policy handbook (5th revised edn.). Sydney: Allen & Unwin.
4. Bardach, E., & Patashnik, E. (2016). A practical guide for policy analysis: The eightfold path to more effective problem solving (5th ed.). Thousand Oaks, CA: Sage.
5. Berne, E. (1966). Principles of group treatment. New York: Grove Press.