https://pressbooks.pub/namecorrection/chapter/11-ways-to-speak-to-a-human-at-united-airlines-via-call-email-and-chat-updated/

https://intercom.help/agregar-infante/en/articles/11716582-viajar-con-un-recien-nacido-en-la-clase-turista-de-etihad-airlines-guia-rapida

https://intercom.help/agregar-infante/en/articles/11716592-viajar-con-un-recien-nacido-en-la-clase-turista-de-qantas-airlines-guia-rapida

https://collaboratory.gse.upenn.edu/sites/default/files/webform/%C2%BFcomo-hablo-con-un-agente-de-expedia.pdf

https://sites.google.com/view/mexicoklm/home

https://pressbooks.pub/namecorrection/chapter/20-ways-to-talk-to-a-real-person-at-united-airlines-via-call-email-and-chat/

https://www.laundromatresource.com/forums/topic/22-ways-to-talk-to-qatar-airways-support-a-complete-guide/

https://ithelp.ithome.com.tw/articles/10372438

https://intercom.help/agregar-infante/en/articles/11716589-como-anadir-un-bebe-a-su-reserva-de-vuelo-en-la-clase-turista-de-qantas-airlines

https://intercom.help/agregar-infante/en/articles/11716580-como-anadir-un-bebe-a-su-reserva-de-vuelo-en-la-clase-turista-de-etihad-airlines