APA-viite (7. p.)
Berkowitz, B. D. (2008). Strategic advantage: Challengers, competitors, and threats to America's future. Georgetown University Press.
Chicago-viite (17. p.)
Berkowitz, Bruce D. Strategic Advantage: Challengers, Competitors, and Threats to America's Future. Washington, D.C.: Georgetown University Press, 2008.
MLA-viite (9. p.)
Berkowitz, Bruce D. Strategic Advantage: Challengers, Competitors, and Threats to America's Future. Georgetown University Press, 2008.
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