Não informado. (1978). Laser Focus with Liberoptic Communications. Advanced Technology Publications.
Lua i Stíl Chicago (17ú heag.)Não informado. Laser Focus with Liberoptic Communications. Newton, Mass: Advanced Technology Publications, 1978.
Lua MLA (8ú heag.)Não informado. Laser Focus with Liberoptic Communications. Advanced Technology Publications, 1978.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.