https://forums.clickstudios.com.au/topic/18315-15-ways-to-reach-united-airlines-support-phone-chat-and-email-help-guide/

https://forums.clickstudios.com.au/topic/17040-15-ways-to-talk-to-live-agent-at-allegiant-airlines-representative-via-phone-email-or-chat-options-a-step-by-step-guide/

https://www.goodreads.com/quotes/12816687-how-do-i-complain-to-expedia–goodreads-to-lodge-a-formal

https://www.sweetprocess.com/kb/Vr57c7MbmwuQvY/article/o8MDujf6V0M/ways-to-get-turkish-airlines-customer-support-phone-chat-and-email-contact-details/

https://www.goodreads.com/quotes/12816684-how-do-i-complain-to-expedia–goodreads-to-lodge-a-formal

https://forums.clickstudios.com.au/topic/17614-7-ways-to-phone-to-live-agent-at-allegiant-airlines-representative-via-online-and-offline-methoda-calling/

https://pressbooks.pub/traveltask/chapter/ultimate-guide-guide-to-updating-personal-info-on-united-airlines-booking/

https://www.goodreads.com/quotes/12816683-how-do-i-complain-to-expedia–goodreads-to-lodge-a-formal

https://forums.clickstudios.com.au/topic/18307-12-ways-to-reach-united-airlines-customer-service-phone-chat-and-email-contact-explained/

https://www.sweetprocess.com/kb/Vr57c7MbmwuQvY/article/aqBpSbf2BOe/ways-to-get-in-touch-with-turkish-airlines-phone-chat-and-email-assistance-guide/