Seel, P. B. (2012). Digital Universe The Global Telecommunication Revolution. Wiley Blackwell.
Lua i Stíl Chicago (17ú heag.)Seel, Peter B. Digital Universe The Global Telecommunication Revolution. Wiley Blackwell, 2012.
Lua MLA (8ú heag.)Seel, Peter B. Digital Universe The Global Telecommunication Revolution. Wiley Blackwell, 2012.
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