1. Department of Tourism, College of Arts & Social science, Sultan Qaboos University Muscat, Muscat, Oman
2. Department of Hospitality and Sport Business Management, University of Delaware, Newark, Delaware, USA
3. Department of Management, College of Tourism and Hospitality Management, West Tehran Branch, Islamic Azad University, Tehran, Iran
4. Department of Management, Faculty of Tourism and Hospitality, West Tehran branch, Islamic Azad University, Tehran, Iran