Gnu Cobol 2 1 Quick Reference

Getting Started with RMCOBOL - VERY GOOD

COBOL II : Programming Techniques, Efficiency Considerations, Debugging

COBOL with style: Programming proverbs (Hayden computer programming series)

A Guide to Structured COBOL With Efficiency Techniques and Special Algorithms

Cobol Programming: A Structural Approach by Nickerson, Robert C., Good Book

COBOL with style: Programming proverbs (Hayden computer programming series)

COBOL II: Programming Techniques, Efficiency Considerations, Debugging...