Knyartutu M, Ferdinandus M, Tiwery Y. The Use of Picture Series to Improve Students Speaking Ability at Eight Grade of SMP Negeri Weet MBD. Koli [Internet]. 20Jun.2023 [cited 27Sep.2024];4(1):28-1. Available from: https://ojs3.unpatti.ac.id/index.php/koli/article/view/9428