1. Allison, P., & Wurdinger, S. (2005). Understanding the power, promise and peril of the experiential learning process. Teacher Education and Practice, 18(4), 386–399.
2. Allison, P. (2000). Research from the ground up: post expedition adjustment. Cumbria: Brathay Hall Trust.
3. Allison, P. (2002). Values, narrative and authenticity: a study of youth expeditions in the 1990s. (Unpublished PhD dissertation). University of Strathclyde: Glasgow
4. Barnes, P. (1997). Theory into practice. The complete practical theory of outdoor education and personal development. Glasgow: University of Strathclyde.
5. Barnes, P., & Sharp, B. (Eds.) (2004). The RHP companion to outdoor education. Lyme Regis: Russell House Publishing.