Communicating Change is all about how to talk to people about the changes your project is delivering. The book contains a lot of practical advice about what to say when, how to identify how people want to receive information as well as recommendations for communicating.
Crucial Conversations Tools for Talking When Stakes Are High is a frequently recommended book. This is less about the theory of change management, and more a guide to how to talk to people about change when it really matters.
Kotter lays out eight steps for cultural change in this book. However, 17 years later, he shifted his perspective on organizational transformation from one that is implemented top-down to one that is based on voluntary bottom-up reforms.
Our Iceberg is Melting
Our Iceberg is Melting: Changing and Succeeding Under Any Conditions, a book by Kotter, is a quick read that explains why the "burning platform" is important for firms to transition to new ways of doing things
This is less about the theory of change management, and more a guide to how to talk to people about change when it really matters.
Who Moved My Cheese
Who Moved My Cheese teaches readers to adopt more productive mindsets and react to change with grace, rising to the challenge instead of exhibiting progress-halting fear or anger.