Tarsinih, Eny. “Language Politeness of Canteen Traders at Wiralodra University, Indramayu Regency, Reviewed from Leech’s Theory”. Gema Wiralodra 16, no. 2 (November 29, 2025): 339–345. Accessed January 30, 2026. https://gemawiralodra.unwir.ac.id/index.php/gemawiralodra/article/view/807.