1. ACI, 2013. Airport Carbon Accreditation Annual Report 2012–2013.
2. ACI, 2014. Worldwide Airport Traffic Report – Calendar Year 2013.
3. ACI, 2015a. ASQ Performance. http://www.airportservicequality.aero/content/performance.html.
4. ACI, 2015b. Airport Carbon and Emissions Reporting Tool (ACERT). http://www.aci.aero/About-ACI/Priorities/Environment/ACERT.
5. Benchmarking airports from a managerial perspective;Adler;Omega,2013