READING, H. F. Systems theory in the social sciences. The Greek Review of Social Research, [S. l.], v. 35, p. 145–157, 1979. DOI: 10.12681/grsr.169. Disponível em: https://ejournals.epublishing.ekt.gr/index.php/ekke/article/view/6829. Acesso em: 1 jul. 2024.