BRZEZIŃSKI, Jerzy M. Basic problems of scientific research in psychology. Health Psychology Report, [S. l.], v. 8, n. 4, p. 373–384, 2020. Disponível em: https://czasopisma.bg.ug.edu.pl/index.php/HPR/article/view/5411. Acesso em: 17 kwi. 2025.