Levinson,Paul. (1997). The soft edge: A natural history and future of the information revolution. Routledge.
シカゴスタイル引用形Levinson,Paul. The Soft Edge: A Natural History and Future of the Information Revolution. London: Routledge, 1997.
MLA引用形式Levinson,Paul. The Soft Edge: A Natural History and Future of the Information Revolution. Routledge, 1997.
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