Levinson, P. (1997). The soft edge: A natural history and future of the information revolution (1. publ.). Routledge.
Lua i Stíl Chicago (17ú heag.)Levinson, Paul. The Soft Edge: A Natural History and Future of the Information Revolution. 1. publ. London ; New York: Routledge, 1997.
Lua MLA (8ú heag.)Levinson, Paul. The Soft Edge: A Natural History and Future of the Information Revolution. 1. publ. Routledge, 1997.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.