Interstate Highway System
MLA
Toon, John D.. "Interstate Highway System." New Georgia Encyclopedia (Project). 2004-01-20, https://www.georgiaencyclopedia.org/articles/business-economy/interstate-highway-system/.
APA
Toon, John D. (2004-01-20). Interstate Highway System. Retrieved from https://www.georgiaencyclopedia.org/articles/business-economy/interstate-highway-system/
Chicago
Toon, John D.. "Interstate Highway System." 2004-01-20. July 24, 2025. https://www.georgiaencyclopedia.org/articles/business-economy/interstate-highway-system/.
