Kevin, K., and W. Wella. “PENGARUH SOCIAL INFLUENCES TERHADAP STICKINESS PEMBELIAN POWERAMP PREMIUM”. Ultima Management : Jurnal Ilmu Manajemen, Vol. 15, no. 1, June 2023, pp. 1-14, doi:https://doi.org/10.31937/manajemen.v15i1.3000.