1. Albers, S., & Rundshagen, V. (2020). European airlines′ strategic responses to the COVID-19 pandemic (January-May, 2020). Journal of Air Transport Management, 87, 101863. https://doi.org/10.1016/j.jairtraman.2020.101863
2. Bahara, W. L., & Saifi, M. (2015). ANALISIS TINGKAT KESEHATAN PERUSAHAAN DARI ASPEK KEUANGAN BERDASARKAN SURAT KEPUTUSAN MENTERI BUMN NOMOR: KEP- 100/MBU/2002 (Studi Kasus pada PT ADHI KARYA (Persero) Tbk. Periode 2012-2014). 2, 10.
3. COVID-19, W. R. P. (2020, November 6). Satgas COVID Ingatkan Masyarakat Disiplin Jalankan 3M - Berita Terkini. Covid19.Go.Id. https://covid19.go.id/p/berita/satgas-covid-ingatkan-masyarakat-disiplin-jalankan-3m
4. del Rio-Chanona, R. M., Mealy, P., Pichler, A., Lafond, F., & Farmer, J. D. (2020). Supply and demand shocks in the COVID-19 pandemic: An industry and occupation perspective. Oxford Review of Economic Policy, 36(Supplement_1), S94–S137. https://doi.org/10.1093/oxrep/graa033
5. Fonseka, M. M., García Ramos, C., & Tian, G. (2012). The Most Appropriate Sustainable Growth Rate Model For Managers And Researchers. Journal of Applied Business Research (JABR), 28(3), 481. https://doi.org/10.19030/jabr.v28i3.6963
6. Hamidovic, H. (2014). An Introduction to Crisis Management.
7. Higgins, R. C. (2016). Analysis for financial management (Eleventh edition). McGraw-Hill Education.
8. Iacus, S. M., Natale, F., Santamaria, C., Spyratos, S., & Vespe, M. (2020). Estimating and projecting air passenger traffic during the COVID-19 coronavirus outbreak and its socio-economic impact. Safety Science, 129, 104791. https://doi.org/10.1016/j.ssci.2020.104791
9. ICAO. (2021, March 17). ICAO Coronavirus Econ Impact. https://www.icao.int/sustainability/Documents/COVID-19/ICAO_Coronavirus_Econ_Impact.pdf
10. Kementerian Badan Usaha Milik Negara. (2002). KEP-100-MBU-2002.pdf. Kementerian Badan Usaha Milik Negara.
11. Kraus, S., Clauss, T., Breier, M., Gast, J., Zardini, A., & Tiberius, V. (2020). The economics of COVID-19: Initial empirical evidence on how family firms in five European countries cope with the corona crisis. International Journal of Entrepreneurial Behavior & Research, 26(5), 1067–1092. https://doi.org/10.1108/IJEBR-04-2020-0214
12. Lasmana, A., & Wijayanti, W. (2016). ANALISIS KINERJA KEUANGAN DALAM MENILAI TINGKAT KESEHATAN ASPEK KEUANGAN PADA PT GARUDA INDONESIA TBK PERIODE 2011-2015 BERDASARKAN SURAT KEPUTUSAN MENTERI BUMN NOMOR:KEP-100/MBU/2002. 13.
13. Libby, R., Libby, P. A., & Hodge, F. (2017). Financial accounting (Ninth edition). McGraw-Hill Education.
14. Linden, E. (2021). Pandemics and environmental shocks: What aviation managers should learn from COVID-19 for long-term planning. Journal of Air Transport Management, 90, 101944. https://doi.org/10.1016/j.jairtraman.2020.101944
15. Platt, H. D., Platt, M. B., & Chen, G. (1995). Sustainable growth rate of firms in financial distress. Journal of Economics and Finance, 19(2), 147–151. https://doi.org/10.1007/BF02920515
16. Presiden Republik Indonesia. (2003). Undang-Undang Nomor 19 Tahun 2003 Tentang Badan Usaha Milik Negara. https://jdih.bumn.go.id/baca/19%20Tahun%202003.pdf
17. PT ABC. (2021). Laporan Manajemen 2020. PT ABC.
18. Rothaermel, F. T. (2017). Strategic management (Third edition). McGraw-Hill Education.
19. Van Horne, J. C., & Wachowicz, J. M. (2008). Fundamentals of financial management (13th ed). Financial Times/Prentice Hall.
20. Wenzel, M., Marvin B. Lieberman, & Sarah Stanske. (2021). Strategic responses to crisis. Strategic Management Journal, 42(2). https://doi.org/10.1002/smj.3161
21. WHO. (2020, November 10). Coronavirus disease (COVID-19). https://www.who.int/health-topics/coronavirus#tab=tab_1