References

The websites we used as resources:

https://en.wikipedia.org/wiki/Costco

http://www.investopedia.com/terms/w/wholesaling.asp

https://blog.a4everyone.com/2016/12/05/5-penefits-of-predictive-analytics-applied-in-wholesale-business/

http://www.investopedia.com/articles/insights/042916/top-4-companies-owned-costco-cost.asp

https://www.costco.com/sustainability-introduction.html

https://www.fool.com/investing/2017/06/29/costco-wholesale-corporation-in-5-charts.aspx

http://www.investopedia.com/stock-analysis/061915/how-much-does-costco-store-sell-each-year-cost.aspx

https://www.cnbc.com/2017/08/01/costco-co-founder-and-chairman-jeff-brotman-dies.html

www.costco.com

http://www.investopedia.com/articles/markets/102715/who-are-costcos-main-competitors.asp

http://www.nasdaq.com/symbol/cost/ownership-summary