Imron, I., B. Satria, and F. Ramadhani. “Pan and Tilt Camera Object Tracking Using Ziegler-Nichols Method for Control PID”. Jurnal Ilmu Komputer Dan Sistem Informasi (JIKOMSI), vol. 6, no. 2, Sept. 2023, pp. 94-102, https://ejournal.sisfokomtek.org/index.php/jikom/article/view/1697.