Panggabean, Azra, Martono Anggusti, and Ria Siregar. “Liability of Indonesian Airlines for Refunds Due to Flight Cancellations Under Consumer Protection Law”. Indonesian Journal of Law and Justice 2, no. 3 (February 3, 2025): 7. Accessed April 24, 2025. https://journal.pubmedia.id/index.php/lawjustice/article/view/3666.