Johnston, D. (1994). The idea of a liberal theory: A critique and reconstruction. Princeton University Press.
Lua i Stíl Chicago (17ú heag.)Johnston, David. The Idea of a Liberal Theory: A Critique and Reconstruction. Princeton, N.J.: Princeton University Press, 1994.
Lua MLA (9ú heag.)Johnston, David. The Idea of a Liberal Theory: A Critique and Reconstruction. Princeton University Press, 1994.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.