Sinclair, U. (1948). Jimmie Higgins. Dietz.
Lua i Stíl Chicago (17ú heag.)Sinclair, Upton. Jimmie Higgins. Berlin: Dietz, 1948.
Lua MLA (8ú heag.)Sinclair, Upton. Jimmie Higgins. Dietz, 1948.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.