BROWN, G. D. (1981). Beyond COBOL; survival in business applications programming. John Wiley.
Chicago-viite (17. p.)BROWN, Gary DeWard. Beyond COBOL; Survival in Business Applications Programming. New York: John Wiley, 1981.
MLA-viite (9. p.)BROWN, Gary DeWard. Beyond COBOL; Survival in Business Applications Programming. John Wiley, 1981.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.