Aji, Budi, Siti Masfiah, Siti Harwanti, and Nur Ulfah. “Factors Affecting Willingness to Pay for National Health Insurance Program Among Informal Workers in Indonesia ”. JURNAL INFO KESEHATAN 21, no. 1 (March 31, 2023): 107–115. Accessed September 19, 2024. http://jurnal.poltekkeskupang.ac.id/index.php/infokes/article/view/940.