Lua APA (7ú heag.)
Barrett, S. (2007). Why cooperate?: The incentive to supply global public goods. Oxford University Press.
Lua i Stíl Chicago (17ú heag.)
Barrett, Scott. Why Cooperate?: The Incentive to Supply Global Public Goods. Oxford ; New York: Oxford University Press, 2007.
Lua MLA (9ú heag.)
Barrett, Scott. Why Cooperate?: The Incentive to Supply Global Public Goods. Oxford University Press, 2007.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.