Susanto, Giovan Meidy, et al. “Sistem Referensi Pemilihan Smartphone Android Dengan Metode Fuzzy C-Means Dan TOPSIS: Android Smartphone Selection Reference System Using Fuzzy C-Means and TOPSIS Methods”. Jurnal RESTI (Rekayasa Sistem Dan Teknologi Informasi), vol. 4, no. 6, Dec. 2020, pp. 1092 – 1101, https://doi.org/10.29207/resti.v4i6.2584.