Não informado. (1993). Cabling Installation Maintenance. Pennwell.
Lua i Stíl Chicago (17ú heag.)Não informado. Cabling Installation Maintenance. Tulsa, Okla: Pennwell, 1993.
Lua MLA (8ú heag.)Não informado. Cabling Installation Maintenance. Pennwell, 1993.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.