Marwanto, Marwanto. “Peran Dan Fungsi Bahasa Indonesia Dalam Pariwisata Karimunjawa”. Indonesian Journal of Muhammadiyah Studies (IJMUS) 4, no. 1 (August 28, 2023): 41–48. Accessed July 2, 2025. https://ijmus.muhammadiyahsalatiga.org/index.php/ijmus/article/view/35.