Abrams, P. (1966). Basic data processing. Holt, Rinehart and Winston, Inc.
Lua i Stíl Chicago (17ú heag.)Abrams, Peter. Basic Data Processing. New York: Holt, Rinehart and Winston, Inc, 1966.
Lua MLA (9ú heag.)Abrams, Peter. Basic Data Processing. Holt, Rinehart and Winston, Inc, 1966.
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