Implementation of the Triple Exponential Smoothing Method for Predicting Helmet Sales: Implementasi Metode Triple Exponential Smoothing untuk Prediksi Penjualan Helm. joincs [Internet]. 2022 Nov. 30 [cited 2026 Nov. 15];5(2):30-4. Available from: https://joincs.umsida.ac.id/index.php/joincs/article/view/1607