GINTING, N.; RAHMAN, N. V.; NASUTION, A. D. Comparison of Landmarks in Medan, Bukittinggi, and Siak as Heritage Tourism. Asian Journal of Environment-Behaviour Studies, Sheffield, U.K., v. 7, n. 21, p. 29–39, 2022. DOI: 10.21834/aje-bs.v7i21.405. Disponível em: https://aje-bs.e-iph.co.uk/index.php/ajE-Bs/article/view/405. Acesso em: 27 jul. 2024.