1.
CĄKAŁA, Marlena, ZAJKOWSKA, Aleksandra, KOZIOŁ, Magdalena, PODGÓRNIAK, Kamila, BŁASZCZAK, Karolina, SKOTNICKA, Joanna and WITKOWSKA, Maria. The Overview of available vitamin and supplement products used to improve immune system function. Quality in Sport. Online. 28 July 2024. Vol. 19, p. 53221. [Accessed 9 September 2024]. DOI 10.12775/QS.2024.19.53221.