Adiyanto, Yoga. “The Importance of Indicators : Product Quality Direct Selling and Advertising in Solving The Problem of The Pizza Hut Purchase During The Covid-19 Pandemic”. Ilomata International Journal of Management 3, no. 3 (July 31, 2022): 403-416. Accessed November 23, 2024. https://ilomata.org/index.php/ijjm/article/view/492.