Maciej Ficek, Wojciech Gawęda, Wiktoria Łobodzińska, Zuzanna Hamouta, and Justyna Adamczyk, “L-CITRULLINE AS A NATURAL ERGOGENIC SUPPLEMENT: A COMPREHENSIVE LITERATURE REVIEW OF ITS EFFECTS IN NITROGEN METABOLISM AND HUMAN PERFORMANCE”, IJITSS, vol. 2, no. 4(48), Dec. 2025, doi: 10.31435/ijitss.4(48).2025.4082.