Neustadt Richard E. & May, E. R. (1986). Thinking in time: The uses of history for decision-makers. Free Press.
Lua i Stíl Chicago (17ú heag.)Neustadt Richard E. agus Ernest R. May. Thinking in Time: The Uses of History for Decision-makers. New York: Free Press, 1986.
Lua MLA (9ú heag.)Neustadt Richard E. agus Ernest R. May. Thinking in Time: The Uses of History for Decision-makers. Free Press, 1986.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.