Dr. Hend Khader Al-Qaisi, and Dr. Layla Garallah Khaleel. “Emotional Marketing Is an Approach to Customer Happiness" An Exploratory Study of the Opinions of a Sample of Customers of Travel and Tourism Companies in the City of Mosul”. International Journal on Economics, Finance and Sustainable Development, Vol. 5, no. 8, Aug. 2023, pp. 13-27, doi:10.31149/ijefsd.v5i8.4694.