Muhammad Yasminto. 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. inv [Internet]. 2019 Feb. 2 [cited 2025 Nov. 12];5(1):162-73. Available from: https://jurnal.iaih.ac.id/index.php/inovatif/article/view/247