Samuelson, P. (1976). Economics (10th.). McGraw Hill.
Lua i Stíl Chicago (17ú heag.)Samuelson, Paul. Economics. 10th. Kogakusha: McGraw Hill, 1976.
Lua MLA (9ú heag.)Samuelson, Paul. Economics. 10th. McGraw Hill, 1976.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.