Não informado. (1971). COMSAT technical review. Communications Satellite Corporation.
Lua i Stíl Chicago (17ú heag.)Não informado. COMSAT Technical Review. Clarksburg, Md: Communications Satellite Corporation, 1971.
Lua MLA (8ú heag.)Não informado. COMSAT Technical Review. Communications Satellite Corporation, 1971.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.