Рађеновић, М., А. Трипковић Марковић, and Р. Ћосо. “The Quality of Coffee Offer in the Restaurant Sectoras a Source of Competitive Advantage”. Hotel and Tourism Management, vol. 4, no. 1, June 2016, pp. 43-52, http://htmanagementvb.com/index.php/HITM/article/view/67.