https://vn.usembassy.gov/vietnamese-students-united-states-increase-16th-straight-year/
https://demographics.virginia.edu/DotMap/index.html
https://www.migrationpolicy.org/article/vietnamese-immigrants-united-states-5#Income%20and%20Poverty
https://www.migrationpolicy.org/article/vietnamese-immigrants-united-states-5#Income%20and%20Poverty
https://www.forbes.com/sites/kellyphillipserb/2018/11/15/irs-announces-2019-tax-rates-standard-deduction-amounts-and-more/#13b793542081
http://www.pewsocialtrends.org/fact-sheet/asian-americans-vietnamese-in-the-u-s-fact-sheet/
http://www.vasummit2011.org/docs/research/The%20Vietnamese%20Population%202010_July%202.2011.pdf
https://en.wikipedia.org/wiki/List_of_highest-income_counties_in_the_United_States
https://www.bea.gov/news/2018/real-personal-income-states-and-metropolitan-areas-2016
https://www.missourieconomy.org/indicators/cost_of_living/
https://www.bankrate.com/calculators/savings/moving-cost-of-living-calculator.aspx