Seidel, Kenneth P.
Cobol
Goodyear , 1971
Buku Teks SO
Leeds, Herbert D.
Computer programming fundamentals: based on the IBM system 360
McGraw-Hill, 1970
Buku Teks SO
Drummond, Marshall E.
American national standard Cobol for the IBM system 360-370
Wadsworth, 1973
Buku Teks SO
IS. Basuki
Pemrograman Cobol
Ghalia Indonesia, 1985
Buku Teks SO
Stern, Nancy B.
Cobol programming
John Wiley & Sons, 1970
Buku Teks SO