Hadi , Lukman, and Siti Hafnidar. “The Effect of Selling Price and Sales Promotion on Decision to Purchase of Sony Brand Home Theater Products”. KnE Social Sciences 3, no. 26 (October 17, 2019): 662–675. Accessed May 21, 2025. https://knepublishing.com/index.php/KnE-Social/article/view/5406.