IFATUL JANAH, A., and D. TANDYONOMANU. “PENGARUH STRATEGI PROMOSI TELKOMSEL APPRENTICE PROGRAM TERHADAP KEPUTUSAN PEMBELIAN”. The Commercium, Vol. 2, no. 2, Nov. 2019, https://ejournal.unesa.ac.id/index.php/Commercium/article/view/30957.