Khairunnisa, Khairunnisa. “INTERNAL MODIFICATION IN REQUESTING USED BY EFL LEARNERS”. Jo-ELT (Journal of English Language Teaching) Fakultas Pendidikan Bahasa & Seni Prodi Pendidikan Bahasa Inggris IKIP, vol. 1, no. 1, Feb. 2020, pp. 24-36, doi:10.33394/jo-elt.v1i1.2402.