CompTIA Linux+/LPIC-1
(Exam Codes: LX0-103/101-400 and LX0-104/102-400), First Edition
Training and Exam Preparation Guide

RHCSA & RHCE Red Hat Enterprise Linux 7
(EX200 and EX300), Third Edition
Training and Exam Preparation Guide

Red Hat Certified Systems Adminstrator & Engineer
Exam EX200 & EX300
Training Guide and Administrator's Reference

CompTIA LinuLPIC-1 Red Hat Certified System Administrator (EX200) and the Red Hat Certified Engineer (EX300) Red Hat Certified System Administrator (EX200) and the Red Hat Certified Engineer (EX300)
Red Hat Certified Technician & Engineer
(Red Hat Enterprise Linux 5)
Exam RH202 / RH302
Training Guide and Administrator's Reference
HP Certified Systems Adminstrator THIRD EDITION
Exam HP0-A01
Training Guide and Administrator's Reference
HP Certified Systems Adminstrator THIRD EDITION - (Russian Language)
Exam HP0-A01
Training Guide and Administrator's Reference

Red Hat Certified Technician & Engineer HP Certified Systems Adminstrator THIRD EDITION HP Certified Systems Adminstrator THIRD EDITION
HP Certified Systems Adminstrator SECOND EDITION
Exam HP0-095
Training Guide and Administrator's Reference
Certified Systems Adminstrator for HP-UX - FIRST EDITION
Exam HP0-091
Study Guide and Administrator's Reference
HP Certified Systems Adminstrator SECOND EDITION Certified Systems Adminstrator for HP-UX - FIRST EDITION