Graver, Robert T.
Structured methods trough COBOL
Prentice-Hall, 1983
Buku Teks
Johnson, David L., 1935-
Writing Structured COBOL
Addison-Wesley, 1986
Buku Teks
Litecky, Charles R.
Structured COBOL: a step by step approach
McGraw-Hill , 1987
Buku Teks
Newcomer, Lawrence R.
Schaum's outline of theory and problems of programming with structured Cobol
McGraw-Hill, 1984
Buku Teks
Brown, Gary D.
Advanced ANS cobol: with structured programming
John Wiley & Sons, 1977
Buku Teks