Zbieg, A., Słowińska, A., & Żak, B. (2017). Strength of interpersonal relations: Introductory verification of the concept and measurement method. In Psychologia Społeczna (Vols. 12, Issues 41, pp. 223-239). Wydawnictwo Naukowe Scholar. https://doi.org/10.23668/psycharchives.16782