Isard, W., & Smith, T. E. (1969). General theory: Social, political, economic, and regional, with particular reference to decision-making analysis. M.I.T. Press.
Lua i Stíl Chicago (17ú heag.)Isard, Walter, agus Tony E. Smith. General Theory: Social, Political, Economic, and Regional, with Particular Reference to Decision-making Analysis. Cambridge, Mass: M.I.T. Press, 1969.
Lua MLA (9ú heag.)Isard, Walter, agus Tony E. Smith. General Theory: Social, Political, Economic, and Regional, with Particular Reference to Decision-making Analysis. M.I.T. Press, 1969.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.