ABCs of z/OS System Programming Volume 7
IBM
IBM Security Directory Server: Product Overview
IBM Tivoli Netcool/OMNIbus Probe for Metrica/NPR: Reference ...
IBM Z Decision Support : Administration Guide and Reference
CompTIA Linux+ Practice Tests: Exam XK0-004
Steve Suehring
CompTIA Linux+ Study Guide: Exam XK0-004
Christine Bresnahan & Richard Blum