Omar, Z. and Salih, S. 2022. Relationship marketing and its role in marketing excellence: An exploratory study of the opinions of a sample of managers in four- and five-star hotels in the city of Duhok. Humanities Journal of University of Zakho. 10, 4 (Dec. 2022), 1052–1068. DOI:https://doi.org/10.26436/hjuoz.2022.10.4.865.