Adji, Mahesa Nararya, David Chua, Nathaniel Kainama, and Feranita Feranita. “Consumer Preference on Paid Game Microtransaction”. Journal of Research in Marketing (ISSN: 2292-9355) 10, no. 3 (August 31, 2019): 832–842. Accessed October 12, 2025. https://techmindresearch.org/index.php/jorm/article/view/779.