"The Perennial Quest for a Psychology with a Soul: An Inquiry Into the Relevance of Sri Aurobindo's Metaphysical Yoga Psychology in the Context of Ken Wilber's Integral Psychology". Book by Joseph Virtue, 2002.
Richard Brautigan (1989). “Richard Brautigan's Trout Fishing in America, The Pill Versus the Springhill Mine Disaster, and In Watermelon Sugar”, p.228, Houghton Mifflin Harcourt
P. J. O'Rourke (2007). “All the Trouble in the World: The Lighter Side of Overpopulation, Famine, Ecological Disaster, Ethnic Hatred, Plague, and Poverty”, p.158, Grove/Atlantic, Inc.