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PENGARUH MANAJEMEN HUBUNGAN PELANGGAN TERHADAP RETENSI PELANGGAN J&T EXPRESS TOMOHON. TaJMA [Internet]. 2025 Dec. 13 [cited 2026 Mar. 21];11(2):56-6. Available from: https://ejournal.stiepetrabitung.ac.id/index.php/JT/article/view/23