Samuelson, P. A. (2017). Economics (19.). McGrawHill.
Lua i Stíl Chicago (17ú heag.)Samuelson, Paul A. Economics. 19. Chennai: McGrawHill, 2017.
Lua MLA (9ú heag.)Samuelson, Paul A. Economics. 19. McGrawHill, 2017.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.