Beginning Ubuntu Linux, Fourth Edition
Ubuntu: Unleashed 2017 Edition
Getting Started with Ubuntu 10.10
Instant Ubuntu: Your complete guide to making the switch to Ubuntu
Ubuntu GNU-Linux: Das umfassende Handbuch, aktuell zu Ubuntu 10.04 LTS »Lucid Lynx«
How to Do Everything: Ubuntu
Ubuntu Certified Professional Study Guide
Linux Bible: Boot Up to Fedora, KNOPPIX, Debian, SUSE, Ubuntu , and 7 Other Distributions
Ubuntu for Non-Geeks: A Pain-Free, Project-Based, Get-Things-Done Guidebook
Ubuntu Kung Fu: Tips, Tricks, Hints, and Hacks
A Practical Guide to Ubuntu Linux
Ubuntu Linux Toolbox: 1000+ Commands for Ubuntu and Debian Power Users
Beginning Ubuntu Linux: [the complete introduction to Ubuntu ; fully revised and updated for 10.04]
Ubuntu Linux toolbox : 1000+ commands for Ubuntu and Debian power users
Beginning Ubuntu Linux, Third Edition
Ubuntu MATE User Guide
Getting Started with Ubuntu 16.04
Ubuntu server essentials: unleash the true potential of Ubuntu server in your production environment using this administration guide