Ropiqoh, R., and R. S. . Lubis. “Implementation of A-Star Algorithm In Finding The Shortest Route of Cooking Oil Distribution in Karo Regency Using Graph”. Mathline : Jurnal Matematika Dan Pendidikan Matematika, vol. 8, no. 2, May 2023, pp. 725-38, doi:10.31943/mathline.v8i2.442.