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Benson, Herbert. 2000. The Relaxation Response. New York, NY: William Morrow. (The earlier 1975 edition contains more extensive meditation instructions)
Roof, Wade Clark.1999. Spiritual Marketplace – Baby Boomers and the Remaking of American Religion. Princeton, New Jersey: Princeton University Press.
Woodhead, Linda, and Heelas, Paul. 2000. Religion in Modern Times. Massachusetts, USA: Blackwell Publishers. (This is a rather academic work, probably not suitable for most readers)
Wuthnow, Robert. 2007. After the Baby Boomers – How Twenty- and Thirty-Somethings are Shaping the Future of American Religion. Princeton, New Jersey: Princeton University Press.