1. AASL (2014) Airport & Aviation Services (Sri Lanka) Ltd Annual Report Available at: http://www.airport.lk/aasl/business_info/2014_annual_rpt.pdf (Accessed: 17 August 2017).
2. AASL (2017) Annual Report 2016- Airport & Aviation Services(Sri Lanka) Ltd Available at: http://www.airport.lk/aasl/business_info/2016_annual_rpt.pdf (Accessed: 23 March 2018).
3. AASL (2019) Annual Report 2018, Airport and Aviation Services (Sri Lanka) Limited Available at: https://www.airport.lk/aasl/company_overview/2018_annual_report.pdf (Accessed: 20 September 2019).
4. ACI (2017) Airport Carbon and Emissions Reporting Tool (ACERT) Available at: http://www.aci.aero/About-ACI/Priorities/Environment/ACERT (Accessed: 23 June 2018).
5. Airports Commission (2014) ‘Economy: Delay Impacts Assessment’, (November). Available at: https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/372619/AC08_tagged.pdf.