PLANGMARN, A. The Development of Tourism Element in Lampang Province. University of the Thai Chamber of Commerce Journal Humanities and Social Sciences, [S. l.], v. 35, n. 3, p. 44–56, 2019. Disponível em: https://so06.tci-thaijo.org/index.php/utccjournalhs/article/view/195882. Acesso em: 30 aug. 2026.