Zalukhu A, Hulu MT, Giawa K, Manik S, Manurung LW. Improving The Students’ Speaking Ability In Giving Suggestions And Advice By The Use Of "Whip Around" Strategy In The Second Grade Of SMA Negeri 8 Medan. JPDK [Internet]. 2023 Aug. 13 [cited 2025 Dec. 6];5(4):423-30. Available from: https://journal.universitaspahlawan.ac.id/index.php/jpdk/article/view/17638