1. The Higher Institute for Tourism and Hotels in Alexandria (EGOTH), Egypt
2. Alexandria University, Faculty of Tourism and Hotels, Egypt
3. College of Economics and Business Administration, University of Technology and Applied Sciences, Salalah, Oman and Department of Hotel Management, Faculty of Tourism and Hotels, Alexandria University, Alexandria, Egypt
4. University of Prince Mugrin, College of Business and Tourism, International Hospitality Management Department, Saudi Arabia, and Alexandria University, Faculty of Tourism and Hotels, Alexandria, Egypt