The original Voice Dialogue model developed by Hal and Sidra Stone
The website of the founders of Voice Dialogue, Hal Stone, Ph.D. and Sidra Stone, Ph.D. Initially developed in 1972, Voice Dialogue, Relationship & the Psychology of Selves (also known as the Psychology of the Aware Ego) continues to evolve – and to inspire.
Voice Dialogue UK John Kent and Micheal Zimmerman deliver very useful training in the voice dialogue approach, a way of us understanding better different parts of ourselves. I reccommend doing training with them if you are interested in this approach.
Using Voice Dialogue thinking with people who hear voices
Talking with Voices by Rufus May, Dirk Corstens and Eleanor Longden.