1. Robert Dentler,Basic Social Problems (Chicago: Rand-McNally, 1967), pp. 3–7.
2. C.K. Brighthill and T.A. Mobly,Education for Leisure-Centered Living, 2nd ed. (New York: John Wiley, 1977), p. 8.
3. Harold Wilensky, “The Uneven Distribution of Leisure: The Impact of Economic Growth on Free Time,”Social Problems 9(Summer):32–56.
4. Sebastian de Grazia,Of Time, Work & Leisure (Anchor Books, New York: Doubleday, 1964), chap. 1.
5. Joseph Pieper,Leisure: The Basis of Culture (New York: Pantheon Books, 1952), p. 56.