APA-referens (7:e uppl.)
Black Book - North Atlantic Airline Scheduled Passenger Yields. Bernstein Institutional Services LLC.
Chicago-referens (17:e uppl.)
Black Book - North Atlantic Airline Scheduled Passenger Yields. Bernstein Institutional Services LLC.
MLA-referens (9:e uppl.)
Black Book - North Atlantic Airline Scheduled Passenger Yields. Bernstein Institutional Services LLC.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.