Duman, F., O. . Ozer, M. Koseoglu, M. Altin, and F. Okumus. “Does Quality Standards Certification Truly Matter on Operational and Business Performances of Firms? Evidence from Resort Hotels”. European Journal of Tourism Research, vol. 23, Oct. 2019, pp. 142-55, doi:10.54055/ejtr.v23i.394.