Zainal Abidin AS, Kifli MZ, Jamali A, Muslimen R, Ahmadi R. Development of Black Pepper Rotary Drum Dryer System. IJIE. 2020;12(7):11-19. Accessed April 8, 2026. https://penerbit.uthm.edu.my/ojs/index.php/ijie/article/view/6596