APA-viite (7. p.)

Jasay, A. D. (1989). Social contract, free ride: Study of the public-goods problem. Oxfod University Press.

Chicago-viite (17. p.)

Jasay, Anthony De. Social Contract, Free Ride: Study of the Public-goods Problem. New York: Oxfod University Press, 1989.

MLA-viite (9. p.)

Jasay, Anthony De. Social Contract, Free Ride: Study of the Public-goods Problem. Oxfod University Press, 1989.