Jagieła, J. (2026). Book Review: Helena Hargaden and Charlotte Sills (2010). Transactional Analysis: A Relational Perspective. London and New York Routledge: Taylor & Francis Group. Edukacyjna Analiza Transakcyjna, 15, eat-2026-rec-01. https://doi.org/10.16926/eat.2026.15.06.en