http://www.sintmaartengov.org/Pages/default.aspx
http://www.sintmaartengov.org/government/VSA/Pages/default.aspx
https://www.state.gov/u-s-relations-with-sint-maarten/
https://www.cia.gov/library/publications/the-world-factbook/geos/sk.html
https://wwwnc.cdc.gov/travel/destinations/traveler/none/sint-maarten