HUGHES, L. (1987). Actually Useful Internet Security Techniques Larry J. Hughes. New Riders Publishing.
Lua i Stíl Chicago (17ú heag.)HUGHES, Larry. Actually Useful Internet Security Techniques Larry J. Hughes. New Riders Publishing, 1987.
Lua MLA (8ú heag.)HUGHES, Larry. Actually Useful Internet Security Techniques Larry J. Hughes. New Riders Publishing, 1987.
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