Não informado. (1989). NTT Review. Nippon Telegraph and Telephone Corporation.
Style de citation Chicago (17e éd.)Não informado. NTT Review. Tokyo: Nippon Telegraph and Telephone Corporation, 1989.
Style de citation MLA (8e éd.)Não informado. NTT Review. Nippon Telegraph and Telephone Corporation, 1989.
Attention : ces citations peuvent ne pas être correctes à 100%.