Skrudland, Hilde. 2004. “Boganmeldelse - Improvisation: Wigram, Tony (2004). Improvisation, Methods and Techniques for Music Therapy Clinicians, Educators and Students. Jessica Kingsley Publishers, 237 Sider”. Tidsskriftet Dansk Musikterapi 1 (2):45-46. https://doi.org/10.7146/tdm.v1i2.159631.