Walach, H., Schmidt, S., & Jonas, W. B. (2011). Neuroscience, Consciousness and Spirituality. Springer Netherlands. https://doi.org/10.1007/978-94-007-2079-4

Walach, Harald, Stefan Schmidt, and Wayne B. Jonas. Neuroscience, Consciousness and Spirituality. Dordrecht: Springer Netherlands, 2011. https://doi.org/10.1007/978-94-007-2079-4.

Walach, Harald, et al. Neuroscience, Consciousness and Spirituality. Springer Netherlands, 2011. https://doi.org/10.1007/978-94-007-2079-4.