“The Effect of Using Free Talk Worksheets from English Planet’s Program on Speaking Achievement at the Tenth Grade Students of Vocational High School Plus Almaarif Singosari”. INOVATIF: Jurnal Penelitian Pendidikan, Agama, dan Kebudayaan 5, no. 1 (February 2, 2019): 162–173. Accessed January 31, 2026. http://jurnal.iaih.ac.id/index.php/inovatif/article/view/247.