Applying the theory of role to learning the activities of trade union officials at grassroots level. Tạp chí Nghiên cứu Khoa học Công đoàn, [S. l.], n. 8, p. 44, 2017. Disponível em: https://vjol.vista.gov.vn/DHCD/article/view/31659. Acesso em: 5 july. 2026.