| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Skills in Transactional Analysis Counselling & Psychotherapy | 978-O-7619-5697-6 (O-7619-5697-2) | 2002 |
C L · Christian Luchterhandt · Christiane Lichthardt · Christina Lechtermann · Christoph Leuchter · Cristina Lastrego