Kulik, Tomasz, and Sławomir Kozieł. “Social Position in a Peer Group of School-Aged Boys and Selected Biological Parameters”. Anthropological Review 83, no. 4 (December 30, 2020): 439–447. Accessed December 6, 2025. https://www.czasopisma.uni.lodz.pl/ar/article/view/11335.