“The Marketing Information System and Its Importance in the Success of Proactive Marketing: Sistem Informasi Pemasaran Dan Perannya Dalam Kesuksesan Pemasaran Proaktif”. Indonesian Journal of Law and Economics Review, vol. 20, no. 4, Nov. 2025, p. 10.21070/ijler.v20i4.1465, https://doi.org/10.21070/ijler.v20i4.1465.