H. Bahtiar, A. E. Sutriandi, and M. Djamaluddin, “Digitalisasi Kitab Nadham Batu Ngompal Karya TGKH. Muhammad Zainuddin Abdul Madjid Berbasis OPF Flipbook”, INFOTEK, vol. 3, no. 2, pp. 84–91, Jul. 2020.