KITTIPATPAKIN, R. Effects of Non-Formal Education Activity Using the Andragogy Concept on Online Sales Skills of Vocational Students. Vocational Education Central Region Journal, [S. l.], v. 9, n. 1, p. 37–46, 2025. Disponível em: https://so06.tci-thaijo.org/index.php/IVECJournal/article/view/284873. Acesso em: 1 oct. 2026.