RHCSA & RHCE Red Hat Enterprise Linux 7: Training and Exam Preparation Guide (EX200 and EX300), Third Edition
2015
Red Hat Certified System Administrator & Engineer
2012
RHCSA Red Hat Enterprise Linux 9
2023
RHCSA Red Hat Enterprise Linux 8
2020
RHCSA Red Hat Enterprise Linux 8 (UPDATED)
2020
HP-UX: HP Certification Systems Administrator, Exam HP0-A01
2008