Nada, Q., Herdiana, I., & Andriani, F. (2022). Testing the validity and reliability of the Depression Anxiety Stress Scale (DASS)-21 instrument for individuals with psychodermatology. Psikohumaniora: Jurnal Penelitian Psikologi, 7(2), 153–168. https://doi.org/10.21580/pjpp.v7i2.11802