Cita APA (7a ed.)

Barrett, S. (2007). Why cooperate?: The incentive to supply global public goods. Oxford University Press.

Cita Chicago Style (17a ed.)

Barrett, Scott. Why Cooperate?: The Incentive to Supply Global Public Goods. Oxford ; New York: Oxford University Press, 2007.

Cita MLA (8a ed.)

Barrett, Scott. Why Cooperate?: The Incentive to Supply Global Public Goods. Oxford University Press, 2007.