Kotlin For Java Developers

Kotlin 4 Java Developers: Einstieg, Umstieg, Praxisbeispiele für die Kotlin Programmierung

978-83-966847-2-1

Kotlin Essentials (Kotlin for Developers, Band 1)

978-83-966847-4-5

Advanced Kotlin (Kotlin for Developers, Band 4)  

978-83-966847-5-2

Effective Kotlin: Best Practices (Kotlin for Developers, Band 5)

Independently Published

Java Kotlin Android Mobile I'm a developer: Notebook 6x9, graph paper

9788396395832

Kotlin Coroutines: Deep Dive (Kotlin for Developers, Band 3)

9788395452888

Functional Kotlin (Kotlin for Developers, Band 2)

Manning Publications

Kotlin in Action                                

Apress

Kotlin Mastery: A Comprehensive Guide for Java Developers and New Programmers

Independently published

Android App Development for Beginners: Master Java, Kotlin, and Android Studio to Build Fully Functional, Real-World Mobile Apps from Scratch