“The Influence of Integration of Four Skills to the Performance of Undergraduate Students on TOEFL Sample Test”. SCHOLASTICA: Jurnal Pendidikan dan Kebudayaan 3, no. 1 (May 31, 2021): 61–74. Accessed April 22, 2026. http://jurnal.stitnualhikmah.ac.id/index.php/scholastica/article/view/954.