CICHY, J.; SOBCZYK, W. Odpady z tworzyw sztucznych i ich recykling. Journal of Education, Technology and Computer Science, [S. l.], n. 1, p. 348–353, 2014. DOI: 2080-9069. Disponível em: https://journals.ur.edu.pl/jetacomps/article/view/6679. Acesso em: 3 lip. 2024.