Sommers, C. (2012). Think like a futurist: Know what changes, what doesn't, and what's next. Jossey-Bass.
Citace podle Chicago (17th ed.)Sommers, Cecily. Think like a Futurist: Know What Changes, What Doesn't, and What's Next. San Francisco: Jossey-Bass, 2012.
Citace podle MLA (9th ed.)Sommers, Cecily. Think like a Futurist: Know What Changes, What Doesn't, and What's Next. Jossey-Bass, 2012.
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