Stern, Nancy B.
Cobol programming
John Wiley & Sons, 1970
Buku Teks
Maynard, Jeff
Modular programming
Butterworth, 1972
Buku Teks
Stern, Nancy B.
Structured COBOL programming
Wiley, 1994
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Brown, Gary D.
Advanced ANS cobol: with structured programming
John Wiley & Sons, 1977
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McCraken, Daniel D.
A Simplified guide to structured cobol programming
John Wiley & Sons, 1976
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