What Can We Know about the Effectiveness of Coaching? A Meta-Analysis Based Only on Randomized Controlled Trial

Erik de Haan and Viktor O. Nilsson.
The Effects of Executive Coaching on Behaviors, Attitudes, and Personal Characteristics: A Meta-Analysis of Randomized Controlled Trial Studies

Andreea Nicolau, Octav Sorin Candel, Ticu Constantin, Ad Kleingeld.
Coaching executives as tacit performance evaluation: A multiple case study. 2017

Batia Ben Hador, Ariel University Center
(2019) The Active Ingredients of Coaching

Erik de Haan – Director of the Ashridge Centre for Coaching, Hult International Business School, UK
Are You the Coach You Think You Are? Different Perspectives on Coaching Behaviour

Dr. Erik de Haan, Ashridge Centre for Coaching – VU University of Amsterdam