Buchanan, J. M., & Congleton, R. D. (1998). Politics by principle, not interest: Toward nondiscriminatory democracy. Cambridge University Press.
Lua i Stíl Chicago (17ú heag.)Buchanan, James M., agus Roger D. Congleton. Politics by Principle, Not Interest: Toward Nondiscriminatory Democracy. Cambridge, Eng: Cambridge University Press, 1998.
Lua MLA (9ú heag.)Buchanan, James M., agus Roger D. Congleton. Politics by Principle, Not Interest: Toward Nondiscriminatory Democracy. Cambridge University Press, 1998.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.