Não informado. (1971). COMSAT technical review. Communications Satellite Corporation.
Chicago (17e ed.) BronvermeldingNão informado. COMSAT Technical Review. Clarksburg, Md: Communications Satellite Corporation, 1971.
MLA (8e ed.) BronvermeldingNão informado. COMSAT Technical Review. Communications Satellite Corporation, 1971.
Let op: Deze citaties zijn niet altijd 100% accuraat.