APA (7th ed.) Citation

Clarke, A. C. (1974). Profiles of the future: An inquiry into the limits of the possible (Revised ed.). Gollancz.

Chicago Style (17th ed.) Citation

Clarke, Arthur Charles. Profiles of the Future: An Inquiry into the Limits of the Possible. Revised ed. London: Gollancz, 1974.

MLA (8th ed.) Citation

Clarke, Arthur Charles. Profiles of the Future: An Inquiry into the Limits of the Possible. Revised ed. Gollancz, 1974.