Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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