| https://forums.serebii.net/threads/ways-to-reach-united-airlines-customer-service-by-phone-chat-and-email-a-total-guide.769990/ |
| https://www.goodreads.com/topic/show/23046203-gu-a-r-pida-c-mo-hablo-con-una-persona-en-delta |
| https://forums.serebii.net/threads/gu%C3%ADa-completa-%C2%BFc%C3%B3mo-hablo-con-una-persona-en-delta.769993/ |
| https://forums.serebii.net/threads/ways-to-reach-american-airlines-customer-service-by-phone-chat-and-email-a-total-guide.769995/ |
| https://www.steadyhealth.com/topics/ways-to-contact-delta-airlines-customer-service-via-phone-live-chat-and-email-a-full-guide |
| https://www.steadyhealth.com/topics/ways-to-talk-to-delta-airlines-customer-service-by-phone-email-or-chat-support-a-brief-guide |
| https://www.steadyhealth.com/topics/ways-to-speak-with-delta-airlines-customer-service-agent-phone-chat-email |
| https://www.steadyhealth.com/topics/ways-to-speak-at-delta-airlines-customer-service-using-phone-email-chat |
| https://www.goodreads.com/topic/show/23046207-gu-a-completa-c-mo-hablo-con-una-persona-en-delta |
