Helen Zink's book, "Team Coaching for Organisational Development," details a three-year case study of team coaching within Green Apple Co. 

The book presents multiple perspectives from the team members, team leader, HR department, and the coach herself, exploring the successes and challenges faced during the process. 

The case study analyzes various coaching models and interventions, including a bespoke model created by the team, and examines the impact on team dynamics, leadership styles, and overall organizational performance. 

Zink discusses the importance of factors like resilience, psychological safety, and stakeholder engagement in team development.

Finally, the text reflects on the lessons learned and the implications for future team coaching practices.