https://pressbooks.pub/travelservicemain/chapter/%e3%80%90complain-helpdesk%e3%80%91how-do-i-file-a-%ef%bd%83%ef%bd%8f%ef%bd%8d%ef%bd%90%ef%bd%8c%ef%bd%81%ef%bd%89%ef%bd%8e%ef%bd%94-with-expedia/

https://pressbooks.pub/travelservicemain/chapter/%f0%9d%9f%b7-%f0%9d%9f%be%f0%9d%9f%bb%f0%9d%9f%bb-%f0%9d%9f%bb%f0%9d%9f%bb%f0%9d%9f%b6-%f0%9d%9f%b6%f0%9d%9f%bf%f0%9d%9f%bd%f0%9d%9f%b7-us-what-number-is-1-800-237-2747/

https://support.google.com/business/thread/324699270?hl=tr&sjid=7851422482236924710-NA

https://mysupport.partech.com/forums/support-forum/9256b528-67e9-ef11-a4de-6045bdb35ea2

https://forums.windowscentral.com/threads/%C2%BF%E2%84%82%C3%B3%F0%9D%95%9E%F0%9D%95%A0-%F0%9D%95%99%F0%9D%95%92%F0%9D%95%93%F0%9D%95%9D%F0%9D%95%92%F0%9D%95%A3-%F0%9D%95%94%F0%9D%95%A0%F0%9D%95%9F-%F0%9D%95%A6%F0%9D%95%9F%F0%9D%95%92-%F0%9D%95%A1%F0%9D%95%96%F0%9D%95%A3%F0%9D%95%A4%F0%9D%95%A0%F0%9D%95%9F%F0%9D%95%92-%F0%9D%95%96%F0%9D%95%9F-%F0%9D%94%B8%F0%9D%95%9E%F0%9D%95%96%F0%9D%95%A3%F0%9D%95%9A%F0%9D%95%94%F0%9D%95%92%F0%9D%95%9F-%F0%9D%94%B8%F0%9D%95%9A%F0%9D%95%A3%F0%9D%95%9D%F0%9D%95%9A%F0%9D%95%9F%F0%9D%95%96%F0%9D%95%A4.539724/

https://pressbooks.pub/travelservicemain/chapter/%f0%9d%9f%b7-%f0%9d%9f%be%f0%9d%9f%bb%f0%9d%9f%bb-%f0%9d%9f%bb%f0%9d%9f%bb%f0%9d%9f%b6-%f0%9d%9f%b6%f0%9d%9f%bf%f0%9d%9f%bd%f0%9d%9f%b7-what-is-the-basic-economy-on-united/