Cita APA (7a ed.)

Buchanan, J. M. (2001). Choice, contract, and constitutions. Liberty Fund.

Cita Chicago Style (17a ed.)

Buchanan, James M. Choice, Contract, and Constitutions. Indianapolis, Ind.: Liberty Fund, 2001.

Cita MLA (9a ed.)

Buchanan, James M. Choice, Contract, and Constitutions. Liberty Fund, 2001.