Sommers, C. (2012). Think like a futurist: Know what changes, what doesn't, and what's next. Jossey-Bass.
Chicago-referens (17:e uppl.)Sommers, Cecily. Think like a Futurist: Know What Changes, What Doesn't, and What's Next. San Francisco: Jossey-Bass, 2012.
MLA-referens (9:e uppl.)Sommers, Cecily. Think like a Futurist: Know What Changes, What Doesn't, and What's Next. Jossey-Bass, 2012.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.