Não informado. (1953). Review of the Electrical Communication Laboratories. Nippon Telegraph and Telephone Corporation.
Chicago (17e ed.) BronvermeldingNão informado. Review of the Electrical Communication Laboratories. Tokyo: Nippon Telegraph and Telephone Corporation, 1953.
MLA (8e ed.) BronvermeldingNão informado. Review of the Electrical Communication Laboratories. Nippon Telegraph and Telephone Corporation, 1953.
Let op: Deze citaties zijn niet altijd 100% accuraat.