Laskowska, A. A., Jankowski, T., Oleś, P., & Miciuk, Łukasz. (2018). Positive orientation as a predictor of hedonic well-being: mediating role of the self-concept. Health Psychology Report, 6(3), 261–272. Pobrano z https://czasopisma.bg.ug.edu.pl/index.php/HPR/article/view/8657