Noviany H. The Effect of Product Diversification on the Purchase Decision of Telkomsel Loop Simcards (Case Study of Bandung State Polytechnic Students). Primanomics : Jurnal Ekonomi & Bisnis [Internet]. 2020 May 20 [cited 2024 May 1];18(2):11-5. Available from: https://jurnal.ubd.ac.id/index.php/PE/article/view/347