1DeJean, Joan. How Paris Became Paris: The Invention of the Modern City. Dexter, MI: Westchester Book Group, 2014.
2Elliott, Annabel Fenwick. "Revealed: The World's Most Expensive (and Cheapest) Cities for 2018." Telegraph, March 16, 2018. Accessed: August 30, 2019.
3Fagan, Chelsea. "Paris Syndrome: A First-Class Problem for a First-Class Vacation." The Atlantic, October 18, 2011. Accessed: August 30, 2019.
4Imboden, Durant. "Paris Métro (2019)." Paris for Visitors. Accessed: August 30, 2019.
5"Knights Templar and Paris." Crusader History. Accessed: August 31, 2019.
6LeBoutillier, Nate. Eiffel Tower. Mankato, MN: The Creative Company, 2006.
7McQueen, Paul. "The 10 Coolest Streets in Paris." Culture Trip. January 20, 2017. Accessed: August 29 ,2019.
8Mutzabaugh, Ben. "The World's 20 Busiest Airports (2017)." USA Airports. April 9, 2018. Accessed: August 30, 2019.
9"Paris, Banks of the Seine." UNESCO. Accessed: August 30, 2019.
10Stacey, Gill. Great Cities of the World: Paris. Milwaukee, WI: World Almanac Library, 2004.
11Wilbur, Helen. E is for Eiffel Tower. Sleeping Bear Press, 2010.