Burroughs, W. S. (1985). The adding machine: Collected essays / William S. Burroughs. Calder.
Lua i Stíl Chicago (17ú heag.)Burroughs, William S. The Adding Machine: Collected Essays / William S. Burroughs. London: Calder, 1985.
Lua MLA (8ú heag.)Burroughs, William S. The Adding Machine: Collected Essays / William S. Burroughs. Calder, 1985.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.