z/OS V2R1.0 DFSORT Messages, Codes and Diagnosis Guide
IBM
IBM Emptoris Contract Management 10.0.2 User Guide
z/OS V1R13.0 MVS Program Management: User's Guide and Reference
Web Services Client for C++
z/OS V1R11.0 JES3 Commands
Ansible: From Beginner to Pro
Michael Heap
Certified OpenStack Administrator Study Guide
Andrey Markelov