GIEDZICZ, Katarzyna, ZIEMBA, Michał, OKOŃSKA, Aleksandra, KOZAKIEWICZ, Julia, MOŚ, Michał and ZIEMBA, Anna. How excessive smartphone and internet use affects sleep in children and young adults. Quality in Sport. Online. 7 April 2025. Vol. 40, p. 59538. [Accessed 24 December 2025]. DOI 10.12775/QS.2025.40.59538.