Não informado. (2000). ACM Electronic Guide to Computing Literature. Association for Computing Machinery.
Lua i Stíl Chicago (17ú heag.)Não informado. ACM Electronic Guide to Computing Literature. New York: Association for Computing Machinery, 2000.
Lua MLA (8ú heag.)Não informado. ACM Electronic Guide to Computing Literature. Association for Computing Machinery, 2000.
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