https://support.google.com/edu/classroom/thread/322837333?hl=en&sjid=3029971122694567235-NC
https://www.skyscrapercity.com/threads/help-aa-come-contattare-american-airlines.2433012/
https://mysupport.partech.com/forums/support-forum/dc539990-8ee3-ef11-a4de-7c1e5239eeb2
https://mysupport.partech.com/forums/support-forum/80b4c4f7-89e3-ef11-a4de-7c1e5239eeb2
https://support.google.com/edu/classroom/thread/322817787?hl=en&sjid=14354276909439037294-AP
https://www.alaskaeaf.org/forums/support-forum/02dca888-82e3-ef11-b542-000d3a359d43
https://knowt.com/note/5c7b78a5-fa80-43b4-b420-e5ebabf9bdc7/Come-contattare-American-Airlines-
https://mysupport.partech.com/forums/support-forum/da922aec-70e3-ef11-b542-000d3a0512be
https://knowt.com/note/bd13b8a8-565f-4671-9714-1b82000d8aae/Come-contattare-British-Airways-dallIta