Bobrow, D. B., & Boyer, M. A. (2005). Defensive internationalism: Providing public goods in an uncertain world. University of Michigan Press.
Lua i Stíl Chicago (17ú heag.)Bobrow, Davis B., agus Mark A. Boyer. Defensive Internationalism: Providing Public Goods in an Uncertain World. Ann Arbor: University of Michigan Press, 2005.
Lua MLA (9ú heag.)Bobrow, Davis B., agus Mark A. Boyer. Defensive Internationalism: Providing Public Goods in an Uncertain World. University of Michigan Press, 2005.
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