TRAN, Long Giang. Puberty sex education for secondary school students of Hanoi City through signs of body changes. Dong Thap University Journal of Science, [S. l.], n. 29, p. 53–57, 2023. DOI: 10.52714/dthu.29.12.2017.530. Disponível em: https://dthujs.vn/index.php/dthujs/article/view/519. Acesso em: 8 sep. 2024.