Jankowska, Joanna, Ewa Szymelfejnik, and Dariusz Nowak. “The Source of Phosphorus in Diet of 17 Year Old Youth”. Medical and Biological Sciences 26, no. 3 (June 24, 2012): 75–79. Accessed November 15, 2025. https://apcz.umk.pl/MBS/article/view/v10251-012-0058-y.