FahrudinTresna Maulana, and BarakbahAli Ridho. 2018. “Lyric Text Mining Of Dangdut: Visualizing The Selected Words And Word Pairs Of The Legendary Rhoma Irama’s Dangdut Song In The 1970s Era”. Systemic: Information System and Informatics Journal 4 (2), 9-17. https://doi.org/10.29080/systemic.v4i2.432.