et. al., Parlindungan,. “Monetization Data Through the Whaff Reward Application (Case Study on Smartphone Users)”. Turkish Journal of Computer and Mathematics Education (TURCOMAT) 12, no. 11 (May 10, 2021): 1104–1106. Accessed December 22, 2024. https://turcomat.org/index.php/turkbilmat/article/view/6003.