Prof. Dr. Youssef Hajeem Al-Taay, “Spiritual marketing and its role in sustainable tourism industry: An analytical research of opinions of a sample of tour guides in Al- Najaf Al-Ashraf Governorate”, Journal of the College of Education for Girls for Humanities, vol. 3, no. 27, Apr. 2023, doi: 10.36327/ewjh.v3i27.11807.