- Livre électroniqueThe Myers-BriggsTM Personality System and its Place in ScienceNorbert Grygar
- Livre électroniquePutting the Pieces TogetherNorbert Grygar
- Livre électroniqueDoes Transactional Analysis Extend to Personality TypeNorbert Grygar
- Livre électroniqueLife Positions, States of Being, and MemoriesNorbert Grygar