Witheford, D. K. (1995). Implementation of technology from abroad. National Academy Press.
Lua i Stíl Chicago (17ú heag.)Witheford, David K. Implementation of Technology from Abroad. Washington, D.C: National Academy Press, 1995.
Lua MLA (9ú heag.)Witheford, David K. Implementation of Technology from Abroad. National Academy Press, 1995.
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