https://speakerdeck.com/smithkaira/seven-ways-how-to-speak-with-a-live-copa-airlines-customer-service-agent-via-phone-email-or-chat-without-long-wait-times

https://business.columbia.edu/sites/forms/files-efs/webform/2023_deming_cup_nomination_and_a/_sid_/MNHJ.pdf

https://speakerdeck.com/smithkaira/complete-instructions-to-contact-avianca-airlines-customer-service-by-phone-email-or-chat-for-quick-travel-solutions

https://speakerdeck.com/smithkaira/15-ways-how-to-contact-turkish-airlines-customer-service-phone-numbers-live-chat-and-email-support-for-immediate-assistance

https://speakerdeck.com/smithkaira/7-live-chat-options

https://www.goodreads.com/quotes/13122153-what-is-the-24-hour-rule-for-klm-klm-customer-care

https://business.columbia.edu/sites/forms/files-efs/webform/2023_deming_cup_nomination_and_a/_sid_/QWEYT.pdf

https://www.eventbookings.com/b/event/don-t-let-down-ex-pedia-customer-care-your-trusted-travel-companion

https://business.columbia.edu/sites/forms/files-efs/webform/2023_deming_cup_nomination_and_a/_sid_/BNGHRT.pdf

https://business.columbia.edu/sites/forms/files-efs/webform/2023_deming_cup_nomination_and_a/_sid_/QWERFD.pdf