Android 9 Libro

Apogeo

Android 9: Guida completa per lo sviluppo di applicazioni mobile

Packt Publishing

Android 9 Development Cookbook: Over 100 recipes and solutions to solve the most common problems faced by Android developers, 3rd Edition (English Edition)

beautiful android women fashion edition Vol.9 (English Edition)

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

清华大学出版社

Android 9编程通俗演义 (Chinese Edition)                

Jorge Santiago Nolasco Valenzuela

Android para Novatos (Spanish Edition)          

Area51 Publishing

Android Studio Videocorso. Volume 9              

Android Services & App Development 9.0 (English Edition)

Area51 Publishing

Corso di programmazione per Android. Livello 9 (Esperto in un click Vol. 45)

Payload Media, Inc.

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