KLEITG.WILLIAMS. (1999). DIGITAL ELECTRONICS: A PRACTICAL APPROACH. PRENTICE HALL INTERNATIONAL.
Lua i Stíl Chicago (17ú heag.)KLEITG.WILLIAMS. DIGITAL ELECTRONICS: A PRACTICAL APPROACH. NEW JERSEY: PRENTICE HALL INTERNATIONAL, 1999.
Lua MLA (9ú heag.)KLEITG.WILLIAMS. DIGITAL ELECTRONICS: A PRACTICAL APPROACH. PRENTICE HALL INTERNATIONAL, 1999.
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