Colm, G. (1961). The economy of the American people: Progress problems, prospects ([2nd ed.].). National Planning Association.
Lua i Stíl Chicago (17ú heag.)Colm, Gerhard. The Economy of the American People: Progress Problems, Prospects. [2nd ed.]. [Washington]: National Planning Association, 1961.
Lua MLA (9ú heag.)Colm, Gerhard. The Economy of the American People: Progress Problems, Prospects. [2nd ed.]. National Planning Association, 1961.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.