Cita APA

Widdowson,, M. (2010). Transactional analysis: 100 key points and techniques. Routledge.

Chicago Edition Citation

Widdowson,, Mark. Transactional Analysis: 100 Key Points and Techniques. London: Routledge, 2010.

Cita MLA

Widdowson,, Mark. Transactional Analysis: 100 Key Points and Techniques. Routledge, 2010.