Khakim, Lukmanul, and Agung Diki Purnomo Aji , trans. “Microcontroller-Based Smart Trolly Performance Analysis”. West Science Interdisciplinary Studies 2, no. 03 (March 25, 2024): 521–527. Accessed December 6, 2025. https://wsj.westsciences.com/index.php/wsis/article/view/692.