Sperry,Len, & Sperry,Jon. (2023). Core Clinical Competencies in Counseling and Psychotherapy: Becoming a Highly Competent and Effective Therapist (2nd.). Routledge.
Chicago-Zitierstil (17. Ausg.)Sperry,Len, und Sperry,Jon. Core Clinical Competencies in Counseling and Psychotherapy: Becoming a Highly Competent and Effective Therapist. 2nd. New York & London: Routledge, 2023.
MLA-Zitierstil (9. Ausg.)Sperry,Len, und Sperry,Jon. Core Clinical Competencies in Counseling and Psychotherapy: Becoming a Highly Competent and Effective Therapist. 2nd. Routledge, 2023.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.