- The Cape Town Open Education Declaration (http://www.capetowndeclaration.org/)
- The Equality Authority Website (http://www.equality.ie/en/Information/Employment-Equality/)
- Combaterea discrimarii la locul de munca, Iustina Ionescu
http://www.equality.ie/en/, Editura Cornelius, 2007
- The International Center for Responsible Tourism (http://www.icrtourism.org/ )
- Hilton Worldwide (http://www.hiltonworldwide.com)
- European Educational Platform for Corporate Social Responsibility in SMEs (http://www.boussolecsr.eu/en/index)
- Green Hotelier (http://www.greenhotelier.org)
- “Green Innovation in Tourism Services”, OECD Tourism Papers, 2013/01, OECD Publishing
- Sustainable Tourism for Development Guidebook (2013)

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