1. Andronik, C. (2007). Wildly Romantic: The English Romantic Poets: The Mad, the Bad, and the Dangerous. New York: Henry Holt.
2. Blake W. (1803, 1863) Auguries of innocence. Retrieved from https://www.poetryfoundation.org/poems/43650/auguries-of-innocence
3. Expression of stressful experiences through writing: Effects of a self-regulation manipulation for pessimists and optimists.
4. Cousins, W.E. (2011). Colored Inklings: Altered States of Consciousness and Literature. In E. Cardena & M. Winkelman (Eds.). Altering Consciousness: A Multidisplinary Perspective.Volume 1: History Culture and the Humanities. 277–300. Santa Barbara, CA: Praeger.
5. Ferrer, J. (2002). Revisioning Transpersonal Theory: A Participatory Vision of Human Spirituality. State University of New York Press.