Wangi, Wulan, and Sutami Dwi Lestari. “Analisa Kesalahan Pengucapan Siswa-Siswi Pada English Diphtongs Melalui Aplikasi Android “English Pronunciation By Kepham””. Jurnal Inspirasi Pendidikan 10, no. 1 (March 8, 2020): 12–19. Accessed July 3, 2024. http://ejournal.unikama.ac.id/index.php/jrnspirasi/article/view/3703.