Baran, P. M. (2011) “Temperament, optimism and a tendency to take risks in pilots and professional drivers”, Studia Psychologica: Theoria et praxis, 11(2), pp. 19–34. Available at: https://czasopisma.uksw.edu.pl/index.php/sp/article/view/2754 (Accessed: 29 March 2024).