Hakim AL, Fajri MB, Faizah EN. Customer Relationship Management (CRM) Training in Increasing Business Sales During the Covid-19 Pandemic: Customer Relationship Management (CRM) Training in Increasing Business Sales During the Covid-19 Pandemic. IJCS [Internet]. 2021 Aug. 30 [cited 2025 Sep. 13];1(2):208-13. Available from: https://www.ijcsnet.id/index.php/go/article/view/33