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Harper, Paul. "Kiwis complain about 'First World problems'", New Zealand Herald, 8 October 2012. Luettu 30 lokakuu 2022. Archived from the original on 22 helmikuu 2013.Harper, Paul (8 October 2012). . New Zealand Herald. Archived from the original on 22 February 2013. Retrieved 25 January 2013.
oed.com
First World (Special uses)Oxford English Dictionary Online. Oxford University Press. Viitattu 18 November 2014.
