The Taken
Vicki Petterson
SQL Pocket Guide
Jonathan Gennick
Linux System Programming
Robert Love
RxJava for Android Developers
Timo Tuominen
Hello! HTML5 & CSS3
Rob Crowther
CSS in Depth
Keith J. Grant
CSS Refactoring
Steve Lindstrom
Web Design Playground
Paul McFedries
CSS Pocket Reference
Eric A. Meyer
CSS: The Definitive Guide
Eric A. Meyer & Estelle Weyl
Refactoring UI
Adam Wathan & Steve Schoger