Putra, Kristian Adi, et al. “Language Visibility and Vitality of Lampung Language in Public Signage: A Linguistic Landscape Study”. Bilingual Review Revista Bilingüe , vol. 38, no. 1, Apr. 2026, pp. 29-51, https://bilingualreviewjournal.org/index.php/br/article/view/644.