Tim harford. (2017). Fifty Things That Made the Modern Economy. Little Brown.
Lua i Stíl Chicago (17ú heag.)Tim harford. Fifty Things That Made the Modern Economy. UK: Little Brown, 2017.
Lua MLA (9ú heag.)Tim harford. Fifty Things That Made the Modern Economy. Little Brown, 2017.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.