Happel, Chris books & textbook
Eleventh Hour Linux+: Exam XK0-003 Study Guide
Speake, Graham Barber, Brian Happel, Chris Lillard, Terrence V.
Syngress /2009-11-30 Paperback / 192 Pages
isbn-10: 1597494976 / isbn-13: 9781597494977
CompTIA Linux+ Certification Study Guide (2009 Exam): Exam XK0-003
Happel, Chris Barber, Brian Speake, Graham Lillard, Terrence V.
Syngress /2009-11-16 Paperback / 464 Pages
isbn-10: 1597494828 / isbn-13: 9781597494823
