Samuelson, P. (1963). Foundations of eco. analysis. Harvard Univ. Press.
Lua i Stíl Chicago (17ú heag.)Samuelson, P. Foundations of Eco. Analysis. Cambridge: Harvard Univ. Press, 1963.
Lua MLA (9ú heag.)Samuelson, P. Foundations of Eco. Analysis. Harvard Univ. Press, 1963.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.