| https://classicyachtinfo.org/sites/default/files/webform/yachtregister-images/faqs-general-list-of-delta-airlines-customer-service-contact-numbers.pdf |
| https://classicyachtinfo.org/sites/default/files/webform/yachtregister-images/contact-methods-qatar-airways-usa-support-numbers-the-overall-guide.pdf |
| https://classicyachtinfo.org/sites/default/files/webform/yachtregister-images/talk-to-someone-at-qatar-airways-usa-contact-numbers-the-direct-guide.pdf |
