https://www.tackleunderground.com/community/topic/68563-formas-de-comunicarse-con-el-servicio-de-atenci%C3%B3n-al-cliente-de-delta-airlines-airlines-por-tel%C3%A9fono-correo-electr%C3%B3nico-y-chat-gu%C3%ADa-official/

https://www.lacdp.org/251688/7_ways_to_contact_united_airlines_customer_service_by_phone_email_or_chat_options_a_step-by-step-guide

https://www.lacdp.org/251680/6_ways_to_use_american_airlines_customer_service_through_phone_number_chat_and_email_options_explained_guide

https://www.studocu.com/en-us/messages/question/12714540/1-844-238-2070-copa-airlines-liverpool-office

https://info-emirates-airlines-helpdesk.frappe.cloud/71-ways-to-reach-emirates-airlines-customer-service-for-flight-support-ultimate-guide-via-phone-email-chat

https://www.tackleunderground.com/community/topic/68540-formas-de-comunicarse-con-el-servicio-de-atenci%C3%B3n-al-cliente-de-delta-airlines-airlines-por-tel%C3%A9fono-correo-electr%C3%B3nico-y-chat-gu%C3%ADa-detallada/

https://info-emirates-airlines-helpdesk.frappe.cloud/11-best-path-to-reach-emirates-airlines-customer-service-for-travel-queries-via-phone-chat-and-email

https://www.studocu.com/en-us/messages/question/12714518/18442382070-etihad-airways-bne-terminal

https://info-emirates-airlines-helpdesk.frappe.cloud/10-easy-ways-to-reach-emirates-airlines-customer-service-for-quick-support

https://info-emirates-airlines-helpdesk.frappe.cloud/10-easy-ways-to-reach-emirates-airlines-customer-service-for-quick-support