„Luxury tax”. Britannica Online Encyclopedia. Архивирано из оригинала 2012-07-07. г. „Excise levy on goods or services considered to be luxuries rather than necessities. Modern examples are taxes on jewelry and perfume. Luxury taxes may be levied with the intent of taxing the rich ...”
bartleby.com
„progressive”. American Heritage Dictionary of the English Language (4th изд.). Архивирано из оригинала 2009-02-09. г. „(6). Increasing in rate as the taxable amount increases”
britannica.com
concise.britannica.com
„Luxury tax”. Britannica Online Encyclopedia. Архивирано из оригинала 2012-07-07. г. „Excise levy on goods or services considered to be luxuries rather than necessities. Modern examples are taxes on jewelry and perfume. Luxury taxes may be levied with the intent of taxing the rich ...”
Schaefer, Jeffrey M. (септембар 1969). „Clothing Exemptions and Sales Tax Regressivity”. The American Economic Review. 59 (4). Part 1, pp. 596–599. JSTOR1813222.CS1 одржавање: Формат датума (веза)
merriam-webster.com
"progressive". Merriam–Webster. "(4b): increasing in rate as the base increases"
princeton.edu
wordnetweb.princeton.edu
„progressive tax”. WordNet. Princeton University. Приступљено 17. 2. 2023. „progressive tax, graduated tax (any tax in which the rate increases as the amount subject to taxation increases)”CS1 одржавање: Формат датума (веза)
web.archive.org
„progressive”. American Heritage Dictionary of the English Language (4th изд.). Архивирано из оригинала 2009-02-09. г. „(6). Increasing in rate as the taxable amount increases”
„Internal Revenue Service”. Архивирано из оригинала 16. 8. 2007. г. Приступљено 2009-03-27. „The luxury tax is a progressive tax – it takes more from the wealthy than from the poor.”CS1 одржавање: Формат датума (веза)CS1 одржавање: BOT: статус параметра оригинални-URL непознат (веза)