Source: https://www.researchgate.net/publication/333483643_A_Linguistic_Landscape_in_Purwokerto_Power_and_Solidarity_Stand_Strong_in_a_Culinary_Center/fulltext/5cefdc73299bf1fb184a97bb/A-Linguistic-Landscape-in-Purwokerto-Power-and-Solidarity-Stand-Strong-in-a-Culinary-Center.pdf