- Cărți electroniceThe Myers-BriggsTM Personality System and its Place in ScienceNorbert Grygar
- Cărți electronicePutting the Pieces TogetherNorbert Grygar
- Cărți electroniceDoes Transactional Analysis Extend to Personality TypeNorbert Grygar
- Cărți electroniceLife Positions, States of Being, and MemoriesNorbert Grygar