Nusraningrum, Dewi, Tri Mayang Mekar, and Jajang Gunawijaya. “An Industry 4.0: Strategy Direction Of An Airline Operations Performance”. Jurnal Manajemen Indonesia 21, no. 3 (December 23, 2021): 278–302. Accessed September 12, 2025. https://journals.telkomuniversity.ac.id/ijm/article/view/2820.