Stępniak, Małgorzata, and Dagmara Budnik-Przybylska. “Introduction to Imagery Training in Working With Swimmers by Using the Sports Imagery Ability Measure (SIAM)”. Journal of Education, Health and Sport 7, no. 8 (August 31, 2017): 664–683. Accessed June 2, 2023. https://apcz.umk.pl/JEHS/article/view/4803.