https://discourse.jabref.org/t/full-list-of-united-airlines-customer-service-usa-contact-numbers-a-step-by-step-guide/5697

https://airlinessupporthelp.forumotion.com/t11-full-list-of-air-franceairlines-usa-contact-numbers-your-complete-customer-service-guide#11

https://www.experatoo.com/travail/-delta-airlines-new-call-to-live-agent-usa-contact-numbers-complete-2025-usa-guide_438455_1.htm

https://www.experatoo.com/travail/-talk-to-live-agent-at-delta-airlines-usa-through-contact-numbers-a-step-bystep_438452_1.htm

https://discourse.jabref.org/t/full-list-of-american-airlines-customer-service-usa-contact-numbers-a-step-by-step-guide/5663

https://www.experatoo.com/travail/-delta-airlines-new-call-to-live-agent-usa-contact-numbers-complete-2025-usa-guide_438450_1.htm

https://www.experatoo.com/travail/complete-list-of-official-delta-contact-numbers-in-the-usa-full-detailed-guide_438447_1.htm

https://oig.dc.gov/sites/default/files/webform/medicaid_fraud_complaint_form/_sid_/expand-network-is-volaris-in-the-us.pdf

https://www.experatoo.com/travail/full-list-of-expedia-reservation-contact-numbers-in-usa-a-ultimate-guide_438515_1.htm

https://forum.orekit.org/t/delta-airlines-customer-service-usa-contact-numbers-in-detail-guide/4910