"Cybersource to Buy Authorize.Net in $565M Deal". eWeek. 2007-06-19. Archived from the original on September 9, 2012. Retrieved 2007-06-19. https://archive.today/20120909210032/http://www.eweek.com/article2/0,1759,2147769,00.asp
"Visa seeks online growth with Cybersource". Reuters. 2010-04-21. https://www.reuters.com/article/idUSTRE63K2HB20100421
Martin, Andrew (2010-04-21). "Visa Buys Cybersource for $2 Billion". The New York Times. ISSN 0362-4331. Retrieved 2020-04-17. https://www.nytimes.com/2010/04/22/business/22visa.html