Parlett, M. 2015. Future Sense: Five explorations of whole intelligence for a world that’s waking up. Kindle Edition (publisher - Matador)

Clarkson, P., 2000. Gestalt Counselling in Action. 2 ed. London: Sage.

Perls, F., Hefferline, R. & Goodman, P., 1951. Gestalt Therapy Excitement and Growth in the Human Personality. Souvenier Press

Mann, D. 2021 Gestalt Therapy: 100 Key Points and Techniques. Taylor & Francis. Kindle Edition

Talia Bar-Yoseph Levine (ed) 2012 Gestalt Therapy: Advances in Theory and Practice (Advancing Theory in Therapy Series Ed Keith Tudor). Routledge, Hove, UK

Perls, F., Hefferline, R. & Goodman, P., 1994. Gestalt Therapy Excitement and Growth in the Human Personality. Gestalt Journal Press Kindle ed. Gouldsboro(ME): Gestalt Journal Press.

Fagan, J., Shepherd, I. L.,  2003 Gestalt Therapy Now. The Gestalt Journal Press

Skottun, G, Kruger, A. 2021 Gestalt Therapy Practice: Theory and Experiential Learning (The Gestalt Therapy Book Series). Taylor & Francis. Kindle Edition.