Hentasmaka, D. “Analyzing the Pattern of L1 Sounds on L2 Sounds Produced by Javanese Students of STKIP PGRI Jombang”. Indonesian EFL Journal: Journal of ELT, Linguistics, and Literature, Vol. 1, no. 1, July 2015, pp. 20-30, https://ejournal.kopertais4.or.id/mataraman/index.php/efi/article/view/190.