Hidayatullah, M. S., and E. Elmas. “BUILD CUSTOMERS LOYALTY PRODUCT LE MINERALE DISPOSABLE GALLONS IN PROBOLINGGO CITY”. JPIM (Jurnal Penelitian Ilmu Manajemen), vol. 7, no. 2, June 2022, pp. 170-8, doi:10.30736/jpim.v7i2.1037.