Não informado. (1953). Review of the Electrical Communication Laboratories. Nippon Telegraph and Telephone Corporation.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Review of the Electrical Communication Laboratories. Tokyo: Nippon Telegraph and Telephone Corporation, 1953.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Review of the Electrical Communication Laboratories. Nippon Telegraph and Telephone Corporation, 1953.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.