Warm, J. S. (1984). Sustained attention in human performance. Wiley.
Lua i Stíl Chicago (17ú heag.)Warm, Joel S. Sustained Attention in Human Performance. Chichester [West Sussex]: Wiley, 1984.
Lua MLA (9ú heag.)Warm, Joel S. Sustained Attention in Human Performance. Wiley, 1984.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.