Gods: A Radical History of Plants, Drugs, and Human Evolution. RalphMetzner(英语:RalphMetzner), ed. Ayahuasca: Hallucinogens, Consciousness, and the Spirit
Cambridge, UK: Cambridge University Press. 1994. ISBN 0-521-44948-0. Metzner, Ralph (编). Ayahuasca: Human Consciousness and the Spirits of Nature. New York