Kaplan, M. (1960). Leisure in America: A social inquiry. Wiley.
Lua i Stíl Chicago (17ú heag.)Kaplan, Max. Leisure in America: A Social Inquiry. New York: Wiley, 1960.
Lua MLA (8ú heag.)Kaplan, Max. Leisure in America: A Social Inquiry. Wiley, 1960.
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