ZHAO, B. Analysis and Research on Population Aging. BCP Education & Psychology, [S. l.], v. 7, p. 74–77, 2022. DOI: 10.54691/bcpep.v7i.2610. Disponível em: https://bcpublication.org/index.php/EP/article/view/2610. Acesso em: 21 mar. 2023.