“Rekomendasi Penambahan Koleksi Buku Menggunakan Algoritma K-Means Clustering Di Perpustakaan UINSU”. CESS (Journal of Computer Engineering, System and Science), vol. 9, no. 1, Jan. 2024, pp. 347-60, https://doi.org/10.24114/cess.v9i1.56026.