Brozen, Y. (1948). Workbook for economics (2d ed.). W. C. Brown Co..
Lua i Stíl Chicago (17ú heag.)Brozen, Yale. Workbook for Economics. 2d ed. Dubuque: W. C. Brown Co., 1948.
Lua MLA (8ú heag.)Brozen, Yale. Workbook for Economics. 2d ed. W. C. Brown Co., 1948.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.