Condon, R. J. (1975). Data processing system analysis and design. Reston Publishing Company, Inc.
Lua i Stíl Chicago (17ú heag.)Condon, Robert J. Data Processing System Analysis and Design. Reston, Virginia: Reston Publishing Company, Inc, 1975.
Lua MLA (9ú heag.)Condon, Robert J. Data Processing System Analysis and Design. Reston Publishing Company, Inc, 1975.
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