- Libro electrónicoThe Myers-BriggsTM Personality System and its Place in ScienceNorbert Grygar
- Libro electrónicoPutting the Pieces TogetherNorbert Grygar
- Libro electrónicoDoes Transactional Analysis Extend to Personality TypeNorbert Grygar
- Libro electrónicoLife Positions, States of Being, and MemoriesNorbert Grygar