VERSELLO, R. J. (1982). Data Processing Systems And Concepts Robert J. Versello; John Reutter Iii. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)VERSELLO, Robert J. Data Processing Systems And Concepts Robert J. Versello; John Reutter Iii. McGraw-Hill, 1982.
Lua MLA (8ú heag.)VERSELLO, Robert J. Data Processing Systems And Concepts Robert J. Versello; John Reutter Iii. McGraw-Hill, 1982.
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