Br Sembiring, Agika Wasinta, and Renza Fahlevi. “The Influence of Online Advertising on Smartphone Purchase Intentions During Covid-19 Pandemic”. Husnayain Business Review 3, no. 1 (March 27, 2023): 33–42. Accessed August 2, 2025. https://journal.adpebi.com/index.php/hbr/article/view/344.