Thompson, A. E. (1979). Understanding futurology: An introduction to futures study. David and Charles.
Chicago-čujuhus (17. p.)Thompson, Alan E. Understanding Futurology: An Introduction to Futures Study. London: David and Charles, 1979.
MLA-čujuhus (9. p.)Thompson, Alan E. Understanding Futurology: An Introduction to Futures Study. David and Charles, 1979.
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