Suszek, Hubert, Krzysztof Fronczyk, Maciej Kopera, Norbert Maliszewski, i Ewa Agnieszka Łyś. 2018. „Psychometric Properties of the Polish Version of the Self-Concept Clarity Scale (SCCS)”. Current Issues in Personality Psychology 6 (3):181-87. https://czasopisma.bg.ug.edu.pl/index.php/CIiPP/article/view/8107.