Não informado. (1970). Point to point communication. Marconi Communication Systems.
Chicago (17e ed.) BronvermeldingNão informado. Point to Point Communication. Chelmsford, Inglaterra: Marconi Communication Systems, 1970.
MLA (8e ed.) BronvermeldingNão informado. Point to Point Communication. Marconi Communication Systems, 1970.
Let op: Deze citaties zijn niet altijd 100% accuraat.