1. Abdi, Y., Li, X., & Càmara-Turull, X. (2020). Impact of sustainability
2. on firm value and financial performance in the Air Transport
3. Industry. Sustainability, 12(23), 9957. https://doi.org/10.3390/
4. su12239957
5. Ab Razak, N. H., Ahmad, R., & Ali Ahmed, H. J. (2008). Government