100 Daily Drawings: Build the Habit of Working Visually — One Drawing a Day
2021
Creating Clarity: Transform Your Work with the Power of Visual Tools
2023
100 Daily Drawings Vol.2: : Build the Habit of Working Visually — One Drawing a Day
2022
100 People Drawings: : Build the Habit of Working Visually — One Drawing a Day
2022
Mehr Klarheit mit Visualisierung im Business
2023
Kaya und der Apfelbaum
2023