Herman, Herman, 		Silalahi, Dumaris, 		Sinaga, Yanti, AND 		Silaban, Gabriella.
" An Analysis of Students’ Difficulties in Learning TOEFL  at Seventh Semester of Universitas HKBP Nommensen Pematangsiantar" <em>Ideas: Jurnal Pendidikan, Sosial, dan Budaya</em> [Online], Volume 9 Number 3 (28 August 2023)