Wharton, A. S. (2002). Working in America. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Wharton, Amy S. Working in America. McGraw-Hill, 2002.
Lua MLA (8ú heag.)Wharton, Amy S. Working in America. McGraw-Hill, 2002.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.