General Aviation Manufacturers Association (2018). "2017 Annual Report"(PDF). Archived from the original(PDF) on 3 March 2018. Retrieved 4 March 2018. {{cite journal}}: Cite journal requires |journal= (help)
General Aviation Manufacturers Association (2018). "2017 Annual Report"(PDF). Archived from the original(PDF) on 3 March 2018. Retrieved 4 March 2018. {{cite journal}}: Cite journal requires |journal= (help)