van Thiel, S., M. C. Joosen, A.-L. Joki, A. van Dam, J. J. van der Klink, and K. de Jong. “Psychometric Analysis of the Dutch Language Facilitative Interpersonal Skills (FIS) Video Clips”. Research in Psychotherapy: Psychopathology, Process and Outcome, vol. 24, no. 1, Apr. 2021, doi:10.4081/ripppo.2021.513.