Brown, G. D. (1977). Advanced ANS Cobol with strucutres programming. John Wiley & Sons, Inc..
Cita Chicago Style (17a ed.)Brown, Gary D. Advanced ANS Cobol with Strucutres Programming. New York: John Wiley & Sons, Inc., 1977.
Cita MLA (9a ed.)Brown, Gary D. Advanced ANS Cobol with Strucutres Programming. John Wiley & Sons, Inc., 1977.
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