Annabil, Y. S., Zainal Abidin, and Muhammad Ramdhani. “Fandom Consumptive Behavior: Consumerism in Enhypen Photocard Purchases”. International Journal of Economics, Business and Innovation Research, Vol. 5, no. 04, June 2026, pp. 723-34, doi:10.63922/ijebir.v5i04.3595.