International Union of Official Travel Organizations, International Labor Organization, & World Tourism Organizations. (1976). Hotel and tourism occupations: Directory of training facilities. International Labor Office.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रInternational Union of Official Travel Organizations, International Labor Organization, और World Tourism Organizations. Hotel and Tourism Occupations: Directory of Training Facilities. Geneva: International Labor Office, 1976.
एमएलए (9वां संस्करण) प्रशस्ति पत्रInternational Union of Official Travel Organizations, et al. Hotel and Tourism Occupations: Directory of Training Facilities. International Labor Office, 1976.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.