Shelly, Gary B.
Advanced ansi cobol disk tape programming efficiencies
Anaheim Publishing, 1974
 Buku Teks
McCraken, Daniel D.
A Simplified guide to structured cobol programming
John Wiley & Sons, 1976
 Buku Teks
IS. Basuki
Pemrograman Cobol
Ghalia Indonesia, 1985
 Buku Teks SO
Seidel, Kenneth P.
Cobol
Goodyear , 1971
 Buku Teks SO
Worth, Thomas
Cobol for beginners
Prentice-Hall of India 1981, 1977
 Buku Teks