Muhyadi, Siti Umi Khayatun Mardiyah, and Arwan Nur Ramadhan. 2020. “Improving Technology-Based Business Administration for Tour Guide of HPI Karimunjawa”. Jurnal Pemberdayaan Masyarakat Madani (JPMM) 4 (1):144-60. https://doi.org/10.21009/JPMM.004.1.12.