Samuelson, P. (2018). Economics (19th.). McGraw Hill.
Lua i Stíl Chicago (17ú heag.)Samuelson, Paul. Economics. 19th. McGraw Hill, 2018.
Lua MLA (9ú heag.)Samuelson, Paul. Economics. 19th. McGraw Hill, 2018.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.