Yusuf, Ahmad, Noor Wahyudi, and Nita Yalina. 2018. “Analisis Dampak Perubahan Perangkat Lunak Menggunakan Graf Relasi Fungsi-Atribut”. Systemic: Information System and Informatics Journal 4 (1):39-43. https://doi.org/10.29080/systemic.v4i1.385.