AJAR UP 2021 as a basic introduction to sign language learning. Community Empowerment, [S. l.], v. 7, n. 6, p. 1079–1084, 2022. DOI: 10.31603/ce.6623. Disponível em: https://coba.unimma.ac.id/ce/article/view/6623. Acesso em: 30 sep. 2026.