Fra The Economist print edition (9. april 1998). «Big MacCurrencies». The Economist. Besøkt 24. juli 2007. ««Big Mac index, which seeks to make exchange-rate theory a bit more digestible.»»
theglobalguru.com
Nicholas A. Vardy. «How to profit from the "Big Mac" Index». The Global Guru. Arkivert fra originalen 13. oktober 2007. Besøkt 22. juli 2010. «Whereas low-income Americans may eat at McDonald's a few times a week, low-income Malaysians rarely eat Big Macs.»
web.archive.org
Nicholas A. Vardy. «How to profit from the "Big Mac" Index». The Global Guru. Arkivert fra originalen 13. oktober 2007. Besøkt 22. juli 2010. «Whereas low-income Americans may eat at McDonald's a few times a week, low-income Malaysians rarely eat Big Macs.»
