BROWN, G. D. (1981). Beyond COBOL; survival in business applications programming. John Wiley.
Cita Chicago (17th ed.)BROWN, Gary DeWard. Beyond COBOL; Survival in Business Applications Programming. New York: John Wiley, 1981.
Cita MLA (9th ed.)BROWN, Gary DeWard. Beyond COBOL; Survival in Business Applications Programming. John Wiley, 1981.
Atenció: Aquestes cites poden no estar 100% correctes.