Muzakir, A., R. N. Halim, and A. Wijaya. “Perangkat Lunak Pencarian Apotek Menggunakan Metode Item Based Collaborative Filltering Dan Algoritma Floyd Warshall”. Journal of Software Engineering Ampera, vol. 1, no. 3, Oct. 2020, pp. 122-33, doi:10.51519/journalsea.v1i3.50.