Alan Berube, Jesus Leal Trujillo, Tao Ran, and Joseph Parilla: Global Metro Monitor. In: Brookings. 22. Januar 2015 (brookings.edu [abgerufen am 19. Juli 2018]).
British Airways to cease Chengdu route - Business Traveller – The leading magazine for frequent flyers. In: Business Traveller – The leading magazine for frequent flyers. 17. Oktober 2016 (businesstraveller.com [abgerufen am 21. September 2017]).