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Azalea Ayuning Tyas. Strategi Komunikasi Pemasaran Radio PTPN Solo dalam Mengelola Sponsorship pada Kegiatan Car Free Day. JIPM [Internet]. 2026 Jun. 3 [cited 2026 Jun. 21];4(3):566-73. Available from: https://ejurnal.kampusakademik.my.id/index.php/jipm/article/view/2425