Mussafi, Noor Saif Muhammad. “PENERAPAN GREEDY COLORING ALGORITHM PADA PETA KOTAMADYA YOGYAKARTA BERBASIS FOUR-COLOUR THEOREM”. Kaunia: Integration and Interconnection Islam and Science Journal 11, no. 1 (May 1, 2015): 19–26. Accessed January 20, 2025. https://ejournal.uin-suka.ac.id/saintek/kaunia/article/view/1078.