References and reading tips
For beginners and those interested
Michael Harner
"The Way of the Shaman"
Sandra Ingerman
"Soul Retrieval"
Sandra Ingerman
"Welcome Home"
For advanced and shamanic practitioners
Alberto Villoldo
"Mending the Past and Healing the Future with Soul Retrieval"
Sandra Ingerman/Hank Wesselman
"Awakening to the Spirit World"