https://discourse.jabref.org/t/everything-you-need-to-contact-united-airlines-in-2025-verified-categorized-and-ready-for-your-next-trip/6259
https://www.experatoo.com/travail/everything-you-need-to-contact-united-in-2025-verified-categorized-ready-for-your-next-trip_438836_1.htm
https://discourse.jabref.org/t/a-stress-free-travel-companion-this-2025-united-airlines-contact-guide-covers-every-possible-customer-concern/6277
https://www.experatoo.com/travail/a-stress-free-travel-companion-this-2025-united-contact-guide-covers-every-possible-concern_438838_1.htm
https://discourse.jabref.org/t/24-7-support-at-your-fingertips-the-most-accurate-2025-directory-of-united-airlines-help-lines-for-every-issue/6279
https://www.experatoo.com/travail/24-7-support-at-your-fingertips-the-most-accurate-2025-directory-of-united-help-lines_438839_1.htm