Tepak Sirih (Betel Box): The Heritage Treasure of Perak. International Journal Of Technical Vocational And Engineering Technology, [S. l.], v. 2, n. 2, p. 11–16, 2020. Disponível em: https://journal.pktm.com.my/index.php/ijtvet/article/view/39. Acesso em: 3 apr. 2025.