Laszlo, E. 1995. The Interconnected Universe: Conceptual Foundations of Transdisciplinary Unified Theory. Singapore: World Scientific Publishing Company.

Laszlo, E. 2003. The Connectivity Hypothesis: Foundations of An Integral Science of Quantum, Cosmos, Life, and Consciousness. Albany, NY: State University of New York (SUNY) Press.

Laszlo, E. 2007. Science and the Akashic Field: An Integral Theory of Everything. Rochester, VT: Inner Traditions.

Laszlo, E. 2016. What is Reality?: The New Map of Cosmos, Consciousness, and Existence. Bayfield, CO: New Paradigm Publishers.

Lilly, J. 1977. The Deep Self: Profound Relaxation and the Tank Isolation Technique. New York: Simon and Schuster.

Masters, R. E. L., and Houston, J. 1968. Psychedelic Art. New York: Grove Press.

Mechoulam R. 1970. Marijuana Chemistry. Science168:1159–66.

Meckel-Fischer, F. 2015. Therapy with Substance: Psycholytic Psychotherapy in the Twenty-First Century. London: Muswell Hill Press.

Merkur, D. 2000. The Mystery of Manna: The Psychedelic Sacrament of the Bible. Rochester, VT: Park Street Press.

Metzner, R. 2014. The Toad and the Jaguar: A Field Report on Underground Researchon a Visionary Medicine: Bufo Alvarius and 5-Methoxy-Dimethyltryptamine.