Herdani B, Wahyuni J. STRATEGI PROVIDER BY.U MELALUI EVENT “GOES TO SCHOOL” PADA KALANGAN SISWA DI SURABAYA. Commercium [Internet]. 2026 Jul. 18 [cited 2026 Aug. 6];10(3):543-5. Available from: https://ejournal.unesa.ac.id/index.php/Commercium/article/view/81342