Cita APA (7a ed.)

De Jasay, A. (1989). Social contract, free ride: A study of the public goods problem. Clarendon Press.

Cita Chicago Style (17a ed.)

De Jasay, Anthony. Social Contract, Free Ride: A Study of the Public Goods Problem. Oxford: Clarendon Press, 1989.

Cita MLA (9a ed.)

De Jasay, Anthony. Social Contract, Free Ride: A Study of the Public Goods Problem. Clarendon Press, 1989.