- Cărți electroniceSystemic Questioning Techniques for Specialists and Executives, Consultants and CoachesHans Patzer
- Cărți electroniceSystemische Fragetechniken für Fach- und Führungskräfte, Berater und CoachesHans Patzer
- Cărți electroniceTécnicas interrogativas sistémicas para especialistas y ejecutivos, asesores y orientadoresHans Patzer