https://www.wyomilitary.wyo.gov/wp-content/uploads/formidable/14/e-x-p-e-dia-usa-customer-service-full-step-by-step-guide.pdf

https://education.aaaai.org/sites/default/files/webform/complete-list-of-official-expedia-customer-contact-numbers-in-the-usa-the-ultimate-detailed-guide.pdf

https://www.thefreshloaf.com/node/77309/16-ways-talk-live-united-airlinesr-agent-step-step-help

https://educativ.net/forums/topic/38514-30-ways-to-call-united-airlines-for-assistance-%C2%AE%EF%B8%8Fcall-united-airlines/

Best Stock Market Institute : Why ICFM is a Trusted Choice For Market Learners

https://educativ.net/forums/topic/38338-02-ways-to-speak-to-live-agent-at-delta-airlines-%C2%AE%EF%B8%8Fcall-delta-airlines/

https://updatesonproperty.com/complete-list-of-expedia-customer-service-usa-contact-numbers-guide-6740

https://educativ.net/forums/topic/38321-13-quick-ways-to-connect-with-delta-airlines%C2%AE-live-customer-support-2025/

https://airlinesflight.zohodesk.com/portal/en/kb/articles/fastest-way-how-do-i-call-american-airlines-customer-service-fastest-way

https://chandoo.org/forum/threads/full-list-of-expedia-%E2%84%A2%EF%B8%8F-customer%E2%84%A2%EF%B8%8F-contact-numbers-in-usa-a-ultimate-step-by-step-guide.59753/