Question: What is the name of the  Hemi-Sync founder's book that is credited with popularizing the term "out-of-body experience"?
Context: An out-of-body experience (OBE or sometimes OOBE) is an experience that typically involves a feeling of floating outside one's body and, in some cases, the feeling of perceiving one's physical body as if from a place outside one's body (autoscopy). Robert Allan Monroe, also known as Bob Monroe (October 30, 1915 – March 17, 1995), was a radio broadcasting executive who became known for his research into altered consciousness and founding The Monroe Institute.  His 1971 book "Journeys Out of the Body" is credited with popularizing the term "out-of-body experience". Sylvan Muldoon (February 18, 1903October 1969) was an American esotericist who promoted the concept of astral projection.  According to Muldoon, astral projection is an out-of-body experience (OBE) that assumes the existence of an astral body separate from the physical body and is capable of travelling outside it.  A 2012 Princeton University Press publication by Hugh Urban asserted that one of Muldoon’s most popular books formed the basis for theories of the Church of Scientology founder L. Ron Hubbard which he claimed were his own.  Of the five books published by Muldoon, three are considered classics. The Affluent Society is a 1958 (4th edition revised 1984) book by Harvard economist John Kenneth Galbraith.  The book sought to clearly outline the manner in which the post-World War II United States was becoming wealthy in the private sector but remained poor in the public sector, lacking social and physical infrastructure, and perpetuating income disparities.  The book sparked much public discussion at the time.  It is also credited with popularizing the term "conventional wisdom."  Many of the ideas presented were later expanded and refined in Galbraith's 1967 book, "The New Industrial State". Travels (published in 1988) is a nonfiction book by Michael Crichton that details Crichton's attempts to leave his medical education at Harvard Medical School, followed by his subsequent travel to Los Angeles and adventures continuing his professional writing career, beginning with "The Great Train Robbery" (1975).  After his initial book became a movie starring Sean Connery, Crichton describes his adventures over the world, and ultimately his experience with mysticism, including out-of-body experiences, astral projection, and fortune-telling. If I Stay is a young adult novel by Gayle Forman published in 2009.  The story follows 17-year-old Mia Hall as she deals with the aftermath of a catastrophic car accident involving her family.  Mia is the only member of her family to survive, and she finds herself in a coma.  Through this coma, however, Mia has an out-of-body experience.  Through this, she is able to watch the actions around her, as friends and family gather at the hospital where she is being treated.  We follow Mia's stories and the unfolding of her life through a series of flashbacks.  Mia finds herself stuck between two worlds; the world of the living, and the world of those who have moved on.  Mia realizes that she must use her past and her relationships to make a decision for her future.  Her options are to stay with her grandparents and the love of her life, Adam, or to move on and avoid the pain of living without her mother, father, and little brother.  The novel received positive reviews from the young adult audience, and Summit Entertainment optioned it in December 2010, for a 2014 film adaptation. Enter the Void is a 2009 English-language French drama film written and directed by Gaspar Noé and starring Nathaniel Brown, Paz de la Huerta, and Cyril Roy.  Set in the neon-lit nightclub environments of Tokyo, the story follows Oscar, a young American drug dealer who gets shot by the police, but continues to watch subsequent events during an out-of-body experience.  The film is shot from a first-person viewpoint, which often floats above the city streets, and occasionally features Oscar staring over his own shoulder as he recalls moments from his past.  Noé labels the film a "psychedelic melodrama". Astral projection (or astral travel) is a term used in esotericism to describe a willful out-of-body experience (OBE), a supposed form of telepathy, that assumes the existence of a soul or consciousness called an "astral body" that is separate from the physical body and capable of travelling outside of it throughout the universe. Sean Ellis is an entrepreneur, angel investor, and startup advisor.  He is the founder and CEO of GrowthHackers and was previously founder and CEO of Qualaroo.  He is also known for popularizing the term product/market fit, and coining the term growth hacking with Hiten Shah and Patrick Vlaskovits in 2010. Hemi-Sync is a trademarked brand name for a patented process used to create audio patterns containing binaural beats, which are commercialized in the form of audio CDs.  Interstate Industries Inc., created by Hemi-Sync founder Robert Monroe, is the owner of the Hemi-Sync technology.
Answer: "Journeys Out of the Body"