"Air France-KLM, Delta Air Lines and Virgin Atlantic Sign Definitive Agreements to Strengthen Trans-Atlantic Partnership" (Press release). 15 May 2018. Air France-KLM, Delta Air Lines and Virgin Atlantic
"Air France-KLM, Delta Air Lines and Virgin Atlantic Sign Definitive Agreements to Strengthen Trans-Atlantic Partnership" (Press release). 15 May 2018. Air France-KLM, Delta Air Lines and Virgin Atlantic
"Boeing, Safran Agree to Design, Build and Service Auxiliary Power Units" (Press release). 4 June 2018. SafranArchived 24 September 2020 at the Wayback Machine, Boeing
"Boeing, Safran Agree to Design, Build and Service Auxiliary Power Units" (Press release). 4 June 2018. SafranArchived 24 September 2020 at the Wayback Machine, Boeing
"Air France-KLM, Delta Air Lines and Virgin Atlantic Sign Definitive Agreements to Strengthen Trans-Atlantic Partnership" (Press release). 15 May 2018. Air France-KLM, Delta Air Lines and Virgin Atlantic
"Boeing, Safran Agree to Design, Build and Service Auxiliary Power Units" (Press release). 4 June 2018. SafranArchived 24 September 2020 at the Wayback Machine, Boeing