Arifuddin, Rahman, Irfan Mujahidin, Subairi Subairi, dan Respati Wikantiyoso. “Sistem Kontrol Suhu Dan Waktu Otomatis Mesin Roasting Kopi Portabel”. CYCLOTRON 4, no. 2 (Agustus 2, 2021). Diakses April 14, 2025. https://journal.um-surabaya.ac.id/cyclotron/article/view/6517.