Dąbrowska, Maria, Jakub Lisiecki, Agata Ulenberg, and Grzegorz Ulenberg. “The Effect of Carrying a Child in a Baby Sling on the Movement System”. Journal of Education, Health and Sport 7, no. 8 (August 31, 2017): 1657–1664. Accessed April 25, 2024. https://apcz.umk.pl/JEHS/article/view/5186.