OP DE BEKE, Julius. The case for investing in young children. W: BUNIO-MROCZEK, Paulina; GROTOWSKA-LEDER, Jolanta (red.). Investing in Children. Innovative Solutions to Improve Children’s Well-Being. Poland: Wydawnictwo Uniwersytetu Łódzkiego,2018. p. 15–19. DOI: 10.18778/8142-108-9.02. Disponível em: https://press.uni.lodz.pl/index.php/wul/catalog/book/1196/chapter/3323. Acesso em: 29 sty. 2026.