What is Co-Counselling?
D. Colbourne (1996)

What is Co-Counselling?
J.P. Hoogma (1997) CornuCopia Publications
Attached: PDF-pictogram Dit is de folder. :)

Wat is Co-Counselling?
J.P. Hoogma; M. van Wijngaarden (2002)
Attached: PDF-pictogram Dit is een A5 folder