COBOL
8 resources
COBOL Programming Standards
A J MarstonBookHTML
GNU COBOL Programmers Guide
Gary L. CutlerBookPDF
ILE COBOL Programmer's Guide
BookPDF
Micro Focus: OO Programming with Object COBOL for UNIX (1999)
MERANT International Ltd.BookHTML
Visual COBOL: A Developer's Guide to Modern COBOL
Paul KellyBookPDF