1. Bryant, S., 2020. Just back from SeaDream: lessons the cruise industry can learn from a COVID-interrupted trip. CruiseCritic. https://www.cruisecritic.com/articles.cfm?ID=5744.
2. CDC, 2020. Framework for conditional sailing and initial phase COVID-19 testing requirements for the protection of the crew. https://www.cdc.gov/quarantine/pdf/CDC-Conditional-Sail-Order_10_30_2020-p.pdf.
3. CLIA, 2019. Contribution of the International Cruise Industry to the U.S Economy in 2018. file:///Users/Ana/Downloads/Contribution%20of%20the%20International%20Cruise%20Industry%20to%20the%20US%20Economy%202018.pdf.
4. CLIA, 2020. State of Cruise Industry Outlook. https://cruising.org/-/media/research-updates/research/state-of-the-cruise-industry.ashx.
5. Coulter, A., 2020. CDC Raises Warning for Cruise Ship Travel to Highest Level. CruiseCritic. https://www.cruisecritic.com/news/5754/?et_cid=3378249&et_rid=275446642&et_referrer=newsletterPopup.