Aprillia, A. and Alfredo Ezra Amadeus 2022. Pengujian Efek Kualitas Layanan pada Loyalitas Pelanggan Kartu Telkomsel selama Pandemi Covid-19. Accounting and Management Journal. 6, 2 (Dec. 2022), 13–24. DOI:https://doi.org/10.33086/amj.v6i2.2705.