1. http://web.shgm.gov.tr/tr/kurumsal/4547-istatistikler
2. https://data.tuik.gov.tr/Bulten/Index?p=Motorlu-Kara-Tasitlari-Agustos-2021-37430.
3. https://ec.europa.eu/clima/policies/transport/aviation_en (accessed May 14 2019).
4. https://www.icao.int/environmental-protection/Pages/aircraft-engine-emissions.aspx.
5. https://www.icao.int/environmental-protection/Pages/LAQ_TechnologyStandards.aspx (acces: 17.05.2020 10:00).