Graaff, J. d. V., & Samuelson, P. A. (1967). Theoretical welfare economics. Cambridge University Press.
Lua i Stíl Chicago (17ú heag.)Graaff, J. de V., agus Paul A. Samuelson. Theoretical Welfare Economics. Cambridge ; New York, NY: Cambridge University Press, 1967.
Lua MLA (8ú heag.)Graaff, J. de V., agus Paul A. Samuelson. Theoretical Welfare Economics. Cambridge University Press, 1967.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.