„The difference between High sein and other reference books is the cooperation between the two authors and the students Julia Kluttig an Immanuel Jork, the layout and the design wich remains of a magazine with highly artistic pictures and charts from Kathrine Uldbaeck-Nielsen and Fabian Hammer. Moreover, the book uses a language which is easy to understand for young people and laymen as well.“

(Ginko, foundation for prevention, coordination centre for prophylaxis for addiction of NRW, 31th of August 2015)