Sales taxes in the United States

免税购物

免稅商店互联网税（英语：Internet taxes）网络税收非歧视法（英语：Internet Tax Nondiscrimination Act）美国的营业税（英语：Sales taxes in the United States）免税期（英语：Tax holiday）使用税（英语：Use

美國各州人口密度列表

Change in Resident Population of the 50 States, the District of Columbia, and Puerto Rico: 1910 to 2020 (PDF). Census.gov. United States Census Bureau

美国各州人类发展指数列表

（原始内容存档 (PDF)于2020-12-15）. The Forgotten Isles: A Risk Assessment of the United States’ Island Territories, 2008-2020 (PDF). sites.tufts.edu. [2022-05-16]

世界各地税率

（页面存档备份，存于互联网档案馆）, Tax Foundation, February 3, 2008 State and Local Sales and Use Taxes and Internet Commerce （页面存档备份，存于互联网档案馆）, CRS Report for Congress

美國的西班牙語

Characteristics in the United States: 2007. United States Census Bureau. [2008-10-09]. （原始内容存档于2020-02-13）. Selected Social Characteristics in the United States: 2007