Hughes, Barry B. 2001. “Global Social Transformation: The Sweet Spot, the Steady Slog, and the Systemic Shift.” Economic Development and Cultural Change 49 (2): 423–458.
Full Citation: Hughes, B. B. (1988). International futures (IFs): History and status. Social Science Computer Review, 6(1), 43–48. http://ssc.sagepub.com/content/6/1/43.full.pdf+html
Hughes, Barry B. International Futures: Choices in the Creation of a New World Order. 2. ed. Dilemmas in World Politics. Boulder, Colo.: Westview Press, 1996.