Hany Shoshan, Ahmed B. Metwally, and Elsayed Khalil Rezk. “Virtual Money: Concept, Types And Economic Effects”. Elementary Education Online 20, no. 6 (December 19, 2023): 1400–1412. Accessed November 9, 2024. https://ilkogretim-online.org/index.php/pub/article/view/5380.