Android 9 Libro

Apogeo

Android 9. Guida completa per lo sviluppo di applicazione mobile

Packt Publishing

Android 9 Application Development Cookbook [Lingua inglese]: Over 100 recipes and solutions to solve the most common problems faced by Android developers, 3rd Edition

Packt Publishing

Android Programming for Beginners: Build in-depth, full-featured Android 9 Pie apps starting from zero programming experience, 2nd Edition

Marcombo

El gran libro de Android 9ed: 1                  

Android 9编程通俗演义                                  

Android 9 Digital Photograpy: The Unofficial Mini-Guide (English Edition)

Parlux

Android Studio 3.2 Development Essentials - Android 9 Edition: Developing Android 9 Apps Using Android Studio 3.2, Java and Android Jetpack

Area51 Publishing

Android Studio Videocorso. Volume 9              

Android Services & App Development 9.0 (English Edition)

Pinnacle Books

Doctor Who #09: Android Invasion