Purnomo, Edi, and Arivatu Ni’mati Rahmatika. “GIS Development to Become an Income Generating Unit at UNWAHA Jombang”. INCOME: Innovation of Economics and Management 1, no. 3 (February 18, 2022): 67–71. Accessed May 20, 2024. https://ejournal.unwaha.ac.id/index.php/jurnal_penelitian/article/view/1623.