https://support.google.com/edu/classroom/thread/335199557?hl=en&sjid=11445308492238211481-NA

https://forum.dimensionengineering.com/topic/18116-ways-to-reach-directly-alaska-airlines-customer-service-number-by-phone-chat-and-email-a-complete-guide24x7/

https://www.goodreads.com/quotes/12701106-c-mo-puedo-llamar-a-expedia-desde-m-xico-expedia-co-mo-hablar-con

https://forum.dimensionengineering.com/topic/18381-ways-to-call-qatar-airways-customer-service-by-phone-email-and-chat/

https://support.google.com/admanager/thread/336234537?hl=en&sjid=10904136693349706648-NC

https://support.google.com/admanager/thread/336248234?hl=en&sjid=407717926136972069-NC

https://www.goodreads.com/quotes/12701097-c-mo-puedo-llamar-a-expedia-desde-m-xico-co-mo-hablar-con

https://support.google.com/admanager/thread/336248210?hl=en&sjid=407717926136972069-NC

https://forum.dimensionengineering.com/topic/17920-your-complete-guide-on-how-to-contact-alaska-airlines-by-phone-chat-and-moreexpert_person/

https://support.google.com/admanager/thread/336248184?hl=en&sjid=407717926136972069-NC