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.lakegeorge.com/event/talk-to-a-live-agent-at-delta-air-lines-usa-detailed-effortless-2025-customer-support-guide-268087/

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

https://travelguideflyer.zohodesk.com/portal/en/kb/articles/get-help-now-how-do-i-get-through-to-singapore-airlines

https://www.lamoneta.it/topic/236600-livetalk-to-someone-at-expedia%E2%84%A2-usa-through-contact-numbers-a-complete-step-by-step-guide/

https://www.lamoneta.it/topic/236591-how-to-contact-copa-airlines%E2%84%A2%EF%B8%8F-support-for-quick-assistance/

https://youslade.com/upload/files/2025/08/hC97OfuOJ4NL4PgLFDDp_26_69efb17fdbd7ed33e5bdd732ec7ae898_file.pdf

https://www.theworldofcdi.com/community/topic/full-list-of-quickbooks-customer-contact-numbers-in-usa-a-ultimate-step-by-step-guide/#postid-1596

https://educativ.net/forums/topic/41297-10-ways-to-connect-with-a-live-agent-at-allegiant-airlines-ua010/