Navastara, D.A. et al. 2019. CLUSTERING TOPIK PENELITIAN BERBASIS UNSUPERVISED LEARNING UNTUK REKOMENDASI KOLEKSI PUSTAKA DI PERPUSTAKAAN ITS. JUTI: Jurnal Ilmiah Teknologi Informasi. 17, 2 (Aug. 2019), 125–134. DOI:https://doi.org/10.12962/j24068535.v17i2.a788.