Opozda-Suder, Sylwia, et al. “Revised and Extended Polish Version of the Student Subjective Well-Being Questionnaire (SSWQ-PL-R): Psychometric Evidence from Two Studies With Adolescents”. Przegląd Badań Edukacyjnych (Educational Studies Review), no. 56, Dec. 2025, doi:10.12775/PBE.2025.025.