APA (7th ed.) Citation

Thompson, A. E. (1979). Understanding futurology: An introduction to futures study. David and Charles.

Chicago Style (17th ed.) Citation

Thompson, Alan E. Understanding Futurology: An Introduction to Futures Study. London: David and Charles, 1979.

MLA (9th ed.) Citation

Thompson, Alan E. Understanding Futurology: An Introduction to Futures Study. David and Charles, 1979.