https://amtrakoig.gov/sites/default/files/webform/foia_form/_sid_/15-Ways-To-Contact-How-To-Talk-to-Someone-at-Expedia-Customer-Service-A-Complete-USA-Guide.pdf
https://amtrakoig.gov/sites/default/files/webform/foia_form/_sid_/Expedia-Customer-USA-Contact-Numbers-Complete-2025-Support-Guide_0.pdf
https://amtrakoig.gov/sites/default/files/webform/foia_form/_sid_/expedia-customer-service.pdf
https://amtrakoig.gov/sites/default/files/webform/foia_form/_sid_/expedia-customer-service-usa.pdf
https://speakerdeck.com/guideunited/reach-united-airlines-r-instantly-17-calling-methods-for-quick-support-in-the-usa
https://speakerdeck.com/flyexpediahelp/expedia-r-usa-contact-numbers-complete-2025-support-guide
https://amtrakoig.gov/sites/default/files/webform/foia_form/_sid_/expedia-customer-service-number.pdf
