Rujukan Groupon

  1. 1 2 Onebox News
  2. ↑ "Investor FAQs". Groupon. 14 August 2018. Dicapai 15 August 2018. 
  3. ↑ "Groupon.com Site Info". Alexa Internet. Dicapai 2017-04-17. 
  4. ↑ Ebuehi, Francis. "Groupon closes shop in South Africa as part of strategic re-alignment - Innovation Village". innovation-village.com (dalam bahasa Inggeris). Dicapai 2018-02-01. 
  5. ↑ "Groupon About". 
  6. ↑ "Groupon Expands to New Markets in Florida". October 12, 2010. 
  7. ↑ MacMillan, Douglas; Galante, Joseph (December 6, 2010). "Groupon Prankster Mason Not Joking in Spurning Google". Bloomberg. 
  8. ↑ "Groupon hits 50m Subscribers - Shopping site sensation". January 21, 2011. Diarkibkan daripada asal pada January 28, 2011. 
  9. ↑ "Groupon Q1 2015 Public Fact Sheet." Groupon. Retrieved June 1, 2015. http://investor.groupon.com/index.cfm.
  10. ↑ Kerin, Roger (2013). Marketing. m/s. 147. 
  11. ↑ "Annual investor reports (2017, 2016)". investor.groupon.com. Groupon investors website. Dicapai 3 December 2018. 
  12. ↑ Coburn, Marcia Froelke (July 14, 2010). "The Real Deal". Dicapai July 14, 2010. 
  13. ↑ Steiner, Christopher (August 30, 2010). "Meet The Fastest Growing Company Ever". Forbes. Dicapai November 23, 2010. 
  14. ↑ Groupon Posts Loss of $9.8 Million
  15. ↑ Taylor, Colleen (2012-03-30). "Groupon's Profit In 2011 Was Actually $22.6 Million Less Than They Previously Said". TechCrunch. Dicapai 2013-07-04. 

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