1. Nielsen, A. C. (Ed.). (2006). Consumer-centric category management. Hoboken/NJ: John Wiley & Sons Inc.
2. American Pet Products Association (2015). Pet industry market size & ownership structure. http://www.americanpetproducts.org/press_industrytrends.asp . Accessed June 18, 2015.
3. Berman, B., & Evans, J. (2013). Retail management: A strategic approach (12th edn.). Upper Saddle River/NJ: Pearson Education.
4. Bloomberg (2015). Whole Foods’ new millennial-focused chain will be called 365. http://www.bloomberg.com/news/articles/2015-06-11/whole-foods-new-millennial-focused-chain-will-be-called-365 . Accessed June 18, 2015.
5. Boatwright, P., & Nunes, J. (2001). Reducing assortment: An attribute-based approach. Journal of Marketing, 65(3), 50–63.