Schweller, R. L. (2008). Unanswered threats: Political constraints on the balance of power. Princeton University Press.
Lua i Stíl Chicago (17ú heag.)Schweller, Randall L. Unanswered Threats: Political Constraints on the Balance of Power. Princeton, N.J.: Princeton University Press, 2008.
Lua MLA (9ú heag.)Schweller, Randall L. Unanswered Threats: Political Constraints on the Balance of Power. Princeton University Press, 2008.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.